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' Perkins L4 Workshop Manual'


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uuu       Perkins Engines Limited       Peterborough         England       Grams Phone Peterborough 3241       Cables Perkoil Peterborough Telex       Publication No 5675       Reissued November 1966       PRICE  20       PRiNTED IN ENGLANDJJ                                                                                                                                                                                                                                                                                                            Fale IJl                                      FOREWORD                                                                                                                                                                                                                                                    PageV                                 GENERAL INFORMAnON                                                                                                                                                                                                                                               Section                                 ENGINE DESCRIPTION AND PHOTOGRAPHS                                                                                                                                                                                                                                    A                                 DO AND DO NOT                                                                                                                                                                                                                                                         B                                 SETTINGS                                   STARTING                                      FAULT                                                                             FINDING                                                                                                                AND                                                                                                                         THE                                                                                                                                                                                    DATA                                                                                                                                                                                      ENGINE                                                                                                                                                                                                                                                                                                       C                                                                                                                                                                                                                                                                                                       D                                                                                                                                                                                                                                                                                                       E                              ENGINE                                                          MAINTENANCE                                 POST DELIVERY                                                                                                                                                 CHECKOVER                                                                                              F                              LAID                           UP ENGINE                                                                                                                                       PROCEDURE                                                                                F                              PERIODICAL                                                                                                                                            ATTENTIONS                                                                                                                                                                                                                                                                                                      F                                                                                                                                                                                                                                                                                                      F                              FILTERS                              FROST                                                                         PRECAUTIONS                                                                                                                                                                                                                                                                                                                                                                                                                                                                                G                      ENGINE OVERHAUL                      CYLINDER                                                                                           LINERS                                                                                                                                                                H                        PISTONS                        CYLINDER                                                                                              AND                                                                                                                               HEAD                                                                                                                                                                 CONNECTING                                                                                                                                                                                                                                                      RODS                                                                                                                                                                                                                                                                                                      J                                                                                                                                                                                                                                                                                                     K                 CRANKSHAFT AND MAIN BEARIIGS                                                                                                                                                                                                                                                   L                 CAMSHAFT AND DRIVE                                                                                                                                                                                                                                                          M                 TIMING                                                                                                                                                                                                                                                                      N            SCHEDULE                                                                                                     OF                                         CLEARANCES                                                                        AND                      TOLERANCES            p              FL                 MECHANICAL                   WATER                   LUBRICATING                      FUEL                      FAN                                              YWHEEL                                                       AND                                                             INJECTION                                                                                       PUMP                                                                                                                DYNAMO                                                                                                                                      AND                                                                                                                                                         GOVERNOR                                                                                                                                                                          SYSTEM                                                                                                                                                                                               FL                                                                                                                                                                                                    SYSTEM                                                                                                                                                                                                             YWHEEL                                                                                                                                                                                                                      ADJUSTMENT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                HOUSING                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       Q                                                                                                                                                                                                                                                                                                     R                                                                                                                                                                                                                                                                                                      S                                                                                                                                                                                                                                                                                                     T                                                                                                                                                                                                                                                                                                     U                                                                                                                                                                                                                                                                                                     V              L4 MARINE                                                                                                                     ENGINES                                                                                                                                                  W1        SERVICE INSTRUCTION                                                                                                                                                                                                                                                 PERPETUITY SCHEME       SERVICE                                                                                                    FACILInES                                                                                                                                                                                                                                   APPENDIX       LUBRICATING OIL DATA                                                                                                                                                                                                                                                  FILM LIBRARY       PERKINS DRIVE RS CLUB                                                                                                                                                                                                                                                APPROVED SERVICE TOOLSPageIV                                                                                  ol                                                                                        I         All threads used on the L4 Engine except on proprietary         equipment and the crankshaftare Unified                1         Pipe SeriesThe crankshaft and starting dog nut are threaded         1 American          ff       NationalFine 14 TP1         Unified threads are not  BSF and         althooghBSW havethe samenomber of threads per inch         as Unified  not recommended         doe to a differencein the thread form         The enginenumber is stamped on the top rear light hand         side of the cylinder block as shown in the diagram below         Tbis number should be quoted when requesting information         or ordering Palts         This publication  produced by the Technical Publications Department         of the Perkins Senice Division and every envour is made to ensure         that the information contained in this mannal  correct at the date of         pubtication but doe to continuous  manufacturers         reservethe right to make  notice                      Diagram showing position of Engine No 60126251                                                                                                      Page V                                             FOREWORD        The Diesel Engine closely resem  bles lts petrol    THA T HlS PRODUCT WILL RECEIVE INf   counterpart inasmuch as the mechanismis essen         SERVICE That part restswith you     tially the same lts cylinders are arranged above     its closed crankcaseits crankshaft is ODeof the         This manual is designedto be a guide to the     same general type as that of a petrol engine it       Distributors of and Dealers in equipment fitted                                                            with the Perkins L4 Diesel engine and to others     bas the same sort of valves camshaft pistons                                                            who are concernedwith the sale and subsequent     connecting roos and lubrication system                                                            maintenanceof such engines      It follows therefore that to a great extent it                                                              Perkins Engines Ltd are at one with all these     requires the same treatment as that which any          Distributors and Dealers in the desire to ensure     intelligent and careful operator would accord to a     that the Perkins Diesel engines in the hands of     petrol engine and that gross negligencesuch as         usersshall give      running the engine short of oil with sludged Dil     or with the water boiling will have the same             An essential factor in the attainment of that                                      object is efficient servicing The Company pro                                                            vides a number of facilities with that end in view        Where the Diesel Engine does differ from the        one of them is this manual In presenting it to     petrol motor however is in th method of hand       responsible Distributors and Dealers the Com     ling and firing its fuel Carburetter and ignition     pany are in effect inviting their cooperation and     systemsare doDeaway with and in their place is         at the time providing an effective aid to that     a single componentthe Fuel Pumpwhich per            cooperation     farms the functions of both This confers upon                                                              Immediately this manual is received hand it     the Diesel a quite  since the   over to the foreman who will be responsiblefor     chancesof breakdown are halved In tact it may                                                            carrying out the maintenance operations which     be axiomatically stated that a Diesel Engine never                                                            are  Do not pleasefile it in the     bas an involuntary stop other than ODecaused                                                            office     through  to abuseunIess     there is a shortageof fuel                              The issue of this manuaI bas been descrihed                                                            above as being ODeof the many aids which Per        The fuel pump though very simple in principle     kiDs Engines Ltd provide in order to ensure     must necessarilybe a piece of precision engineer      efficient servicefor the enginesthey market Two     ing Many yearsof experienceand many hundreds          of the others may appropriately he mentioned     of thousandsof miles of running ensure that the        here     fuel pump fitted to Perkins engines will given     ordinarily decent treatment continue to function         is provided at Peterborough     faultlessly It must however be regarded in the        where the mechanics employed by Distributors     samelight as a  it shouldnot         Dealers and users are given instruction OD the     be interfered with and that its repair should it       the engine     Deedattention is definitely beyond the skill of any      Then there is the Perkins Perpetuity Plan which     but specially trained workmen Like the magneto        is in fact an  peculiar     it is built as a unit So that in the rare event of    description having numerous special advantages     failure it cao be replaceden bloc                     A booklet describing this can be obtained on                                                            request       Unremitting care and attention at the Perkins     factory have resulted in an engine capable of            In conclusion we recommend Dealers Distri     hundreds of hours of profitable service WHAT          butors and usersto  the Service     THE  HOW                            Division of Perkins EnginesLtd Peterboroughin     EVER     CONTROL        IS THE     TREATMENT           case of Deed  1                                                                                                               Page Al  J                     Perkins L4  vertical fourstroke       Crankshaft and Main Bearings            Power Units They are entirely of British design             The crankshaft is made from an alloy steel            and manufacture and embody the results of                 stam ping with hardened main and crankpin             in the production of Diesel             journais The crankshaftruns in             engines over a period of many years                       hearings which are lead bronze                                                                      lined and indium flashed              The materials and workmanship throughout are            of the highest class Most parts are guaranteed                                                                     ConnectingRods             being used everywherein the          The connecting rods are of alloy steel  H             courseof manufactureand all parts passthrough            a system of thorough inspection where they are           section stampingswith  shell big            checked to the closest limits Each engine is            end bearings which are lead bronze lined and            subjected to stringent tests before leaving the          indium flashed            Works                                                                     Pistons            General                                                   The pistons are flat topped They are of light                                                                     aluminium alloy with ample metal in the crown to              The Perkins lA Diesel with which tbis manuaI          carry off the heat of combustion Three com            is concerned is a Cour cylinder unit having a          pression rings of which ODe is of laminated steel            bore and stroke of 4 in 10795mm and 4i In          and ODe scraper ring are fitted above the gudgeon            12065mm respectively                                 pin There is ODe scraper ring below that pin                                                                     The gudgeon pins are of the fully floating type            Cylinder Block               The cylinder block and     crankcase comprise a       Timing Drive            onepiece high duty alloy      iron casting Centri                                                                        The camshaft and fuel pump are gear driven            fugal cast iron wet liners    are fitted which are                                                                     the timing case being a separate casting secured            flanged at the top end and   fitted with sealing rings                                                                     to the front end of the cylinder block Provision            at the lower end                                                                     is made for mounting a gear drive on the timing                                                                    case meshing with the timing gear train for driving            Cylinder Head                                           a hydraulic pump or uther low power auxiliary              The cylinder head is an alloy iron casting            securedto the cylinder block by a large number           Lubrication          l   l        of weU spaced through studs The overhead            valves are operated by push rods from flat faced                                                                        Lubrication is high pressureforce reed thrOUgh                                                                     out the engine The pump a gear type is secured            tappets in the cylinder block the rocker assembly                                                                     to the cylinder block and is driven by spiral gears            being mounted on top of the cylinder head The                                                                     from the camshaft It is fully capable of main   1        whole assembly  is enclosedin a light alloy die cast            cover All valves are of special alloy steel the                                                                     taining an  all running speeds            inlet being larger to ensure maximum volumetric                                                                     FoeI Injection Equipment  1         efficiency The spherical combustion chamber is            formed half in the head and half by a detachable           The unit type fuel pump is fiange mounted            steel cap                                               on the timing case                                                                       The atomisers are two hole type fitted in an            Camshaft                                                accessible position on top of the cylinder head               The low level camshaftis situated in the offside       ODe  spray is directedinto the             of the cylinder block and is supported by three          and the other into the cylinder ensuring easy                                                                   starting            hearingsJ  j  Page A2                                                                      Engine                                                  Cold Starting Equipment  The cooling water is pump circulated by a centri        Comprises  a hand pump  tankfugal pump which is mounted on the front end of          piping induction heater and starter and heaterthe cylinder block ft is driven together with the      switches The induction heater is not in contactdynamo bya Vee belt from the engine crankshaft         with the burning gasesin the cylinder It is located                                                         in the inlet venturi and is in use only during  The internal water passagesare arranged to give                                                         starting under very cold conditionsa brisk circulation of water around the  and atomiser seating The fan is mountedon the forward end of the water pump                    Electric Starting Equipment                                                            A 12volt starter is flange mounted on theAir Intake                                              flywheel housing   A large air cleaner is fitted through which mustpassalI air drawn into the engine Harmful dust          Dynamois thus excludedand the lire of the        12Volt  earth return type completewith  The air cleaneris connected          box and fuse box It is mounted on the off sideto the venturi inlet which houses the butterfly          of the cylinder block and is belt driven by a Veethrottle valve control                                  belt from the crankshaft                                                                                                                                                                                                                                r                                                                                                                                                               INDEX TG ENGINE PHOTOGRAPHS  I Breather Pipe  2 Fuel Filter  3 Pipe from Pneumatic Uovernor to Air     Intake  4 Inlet to Fuel Injection Pump  5 Fuel Pump Stop Control Lever  6 Cylinder Block Water Drain Coc  7 Lubricating Dil Filter  8 Sump  9 Fan Belt                      10   Main Leakoff Pipe 11   Timing Case 12   Fuel Injection Pump 13   Water Pump 14   Fan 15   Water Dutlet to Radiator 16   Atomiser Leakoff Pipe 17   Fuel Injection Pipe 18   Atomiser 19   Cylinder Head Cover 20   Exhaust Manifold 21   Air Intake 22   Butterfly Control Lever 23   Dynamo 24   Lubricating Dil Filler 25   Starter Motor 26   Front Engine Support 27   Facing for Alternative Front Engine Support 28   Fuel Lift Pump 29   Hand Primer for Fuel Lift Pump 30   Mechanical Governor 31   Mechanical Governor Dperating Lever 32   Inlet to Fuel Lift Pump 33   Dipstick 34   Sump Drain Plug 35    36   Dil Bath Air Cleaner                                                                                                          l                                                     l                                                     l    1    1                                                                                           Page BI                   SETTNGS AND DATA B           Bore                                                4linorI0795mm           Stroke                                       4i in or 1206 mm                                                                      4           Swept volume                                          442 litres 270 cuin           Compression ratio                                                      175  I           Firing order                                                        I 3 4 2           Horsepower                                                       See below           Maximum torque                    182lbsft 2517 kgm at 1000 rpm           Pistons                                                      Light Alloy           Spil I timing                                              21 degrees BTC           Atomiser Body                                 BKB 35S87 or BKB32S630           Atomiser Nozzle                                                BDL IIOS6116           Injection piessure                                            See page TIl           Valve lift                                      465 in or 11811 mm           Valve Face and Seat Angle                                          450           Dil Pressure at max engine speed and normal working temperature                                        2550 Ibs per sq in 176352kgsq cm           Valve clearance                                    010 in or 254 mm           When checking and adjusting valve clearances the engine should be           tumed to bring the respective pistons to TDC on compression                    TorqueTensions           CylinderHead Nuts           Con Rod Setscrews                                                                                                                                         LbsFt kgm                                                                      808511061175                                                                     10010513821451           Main Bearing Setscrews                                    12513017291800                                                75 1037           With referenceto the Cylinder Head Nuts these should be rechecked           with the engine hot           It will be  after overhaul or rectification work bas been         carried out there will be a settling period which will allowaslight           variation on the figures quoted This is not detrimental to the perform           anceof the engineand there is no necessity  to interfere with the settings           On no account should attempts be made to increasethe torque already           quoted by retightening with a torque spanner           SUMP CAPACITIES                                       Combines                             2 gallons 908litres                                           745 Tractor                          2 gallons 908litres           FordsonMajor Tractor                         ol   gallons                                                                    6 pints1249                                                                                litres           Claas Combine                                         2 gallons 908litres           lndustrial                                   3 eallons3 pints 1531litres           HORSE              POWER                Combines                    56 bhp at 1940rpm            745 Tractor                  50 bhp at 1500rpm               FordsonMajor Tractor                         45 bhp at 1500rpm          Industrial                                        62 bhp at 2000rpm           Claas                    Combine                                                                                               Up to 59 bhp at 2000rDmPage B2                                                           Settingsand Datacontinued          Details of Industrial engine ratings caD be obtained upon requestfrom          the plant manufacturers or engine manufacturers          In the case of queries on other types of application apply to Service          Division quoting the engine number          Derating for Altitude  Where enginesare called upon to operate in          rarefied  by altitude such engines should be          derated For details regarding engine derating for altitude apply to          Service Division Perkins Engines Ltd Peterborough or to those                          listed on Page 11          IMPORTANT NOTE  ALL Screw Threads used on the L4 engine          except on proprietary equipmnt and the crankshaft are Unified Series          and American Pipe Series          The crankshaft and starting dog nut are threaded 1 inch American          National Fine 14 TPI                                                                                               l                                                                                               l                                                                                               l                                                                                               r                                                                                               Page Cl       PREPARAnON         FOR STARnNG                   The engineis now ready for starting  Check the radiator water level                       Move the speed control lever to full open  Check the enginesump oil level                     position  Seethat there is tuel oil in the tank                                                             COLD STARnNG EQUIPMENT   Where a pneumatic govemor is fitted make                                                      Method of Operationquite sure that the connections on the pipetrom the butterfly valve to the govemor on the           The small hand pump see Fig CI is contuel pump are light                                  structedwith inlet and outlet ports On the upward                                                      stroke of the pump fuel is drawn through a copper  Check that the starter battery is tully charged                                                      pipe trom the supply tank into the pump bodyand that all electrical connections are  all circuits in order                          On the downward stroke tuel is pressure ted                                                      through the outlet port and a copper pipe to an                                                      atomiser fitted in the venturi A swirl in thePriming the Foei System                                                      atomiser causesthe fuel to be sprayed into the  In the caseof a new engineor an enginewhich         venturibas been laid up it is important that the fuelsystemis bIed as follows PressureFed Systems    Slackensmall plug on tbe top of tbe final fuelfilter and operate tbe band primer on tbe fuelliflpump ontil fuel tree trom air                             Fig Clthe plug hole Tighten the plug   Slacken the bleed screw on the top of the tue       The spray is directed on to a heater plug seepump                                                 Fig C2 which is also fitted into the veoturi   Again operate the hand primer on the fuel lift       The resistaoce wire 00 the heater plug is heatedpump until fuel issuestrom the bleed screw and        by an electric current when the heater button isall signs of air have disappeared                    pressedon the HeaterStarter switch  Tighten the bleed screw securely and give the         As the pistons travel down 00 the suction strokeprimer a tew more strokes in order to deliver the     the fuel spray which bas been fired by the hotfuel through the relief valve on the tue filter     resistaoce wire on the plug is drawn into theclearing this part of the systemof air               cylinder bare to assistin easystarting                                                        The wiring diagram see Fig C3 shows allGravity Fed Systems                                                       of the HeaterStarter switch    Slacken smalI plug on the top of tbe final fuel   and Heater plug  and turn on fuel tank supply until fuel treetrom air issuestrom tbe plug hole Tighten the        Use of Equipmentplug                                                   The hand pump is usedin conjunction with the  Slacken the bleed screw on tbe top of the fuel      induction heater and HeaterStarter switch forpump and allow fuel to run until no trace of air      starting in cold weatherremains                                                        Excessiveuse of the hand pump is to he depre   Tighten tbe bleed screw securely whilst fuel is    cated as it is liable to he harmful to the enginestill issuing                                        and could damage the piston ringsPage C2                                                                        Starting the    With  addition to the hand               Press the Heater switch for about half apump two electric push button switchesmarked              minute count forty fairly slowly Then with Heater and  Starter respectivlyare mounted          the Heater switch still pressed                                                                                             and the throttleon the  or              fully opened cngage the starter motor at thenear to the enginecontrols Theseare for starting           same time giving short strokes on the handthe engine                                                 pump   an other applications a starter engaging lever            The engineshould then startis provided insteadof the button switch previously            If it doesnot wait half a minute and try againmentioned                                                              If the engine doesnot start at the third attempt  In warm weatheror if the engine bas been only             somefault is presentand an  berecently stoppedopen up the throttle and engage            madethe starter motor  If the battery is sufficiently charged to turn the        NOTE  Always be sure that the starter pinionstarter motor quickly the engine should start             bas stopped revolving before reengaging the                                                            starter motor otherwise the starter ring or pinion                                                            may be damagedCold Starting Equipment                                                              Af ter using the hand pump always make sure  In cold weatherif the              that the plunger is screwed down and the reedthe cold starting equipment should be used                 tap turned off otherwise a leakage may occur                                                            with damaging results   See that there is fuel oil in the reservoir tankif fitted                                                            Main Tank Supply  Turn on the supply tap to the hand pump                    In certain fuel systems                                                                                   no separatetank is fitted  lTnscrew the pump plunger and give it one                    lnstead the hand pump draws fuel from thcstroke of about half an inch                               final fuel filter                                                  I                                                   aio                                                                                            N                                              Q                                                                                                               Fig C3 Wiring Diagram           Fig C2   Plug Heater1      Storting the                                                                   Page C3       In this casethe procedureis as laid down above     the exhaust valves are opened thereby relieving       exceptthat the tap provided on the filter should      the compressionto facilitate easy turning       be turned on before using the equipment                To start put the  in he          Af ter use be sure to turn olf the tap and screw   vertical position turn the engineover smartly 8nd       down the hand pump otherwise fuel may drain           drop the decompressor      lever       from the main tank into the engine                      It should be noted that where a decompressor                                                             shaft is fitted loss of compressionin ODe or more    Maintenanceof Equipment                              cylinders may be causedby this shaft fouling one         Use fuel oil in the system                         or more of the rocker levers thus preventing         Check unions pipes and supply tank fOTleaks      closure of a valve or valves The remedy is a                                                             ney cylinder head cover joint         Inspect every 1000hours to make sure that all       connectionsand terminals are tight on  Heater         If the engine is particularly cold lift the de       Starter switch and Heater plug                       and turn the engine over a few                                                             time before attempting to start         If any difficulty is found in operating the pump       especially on the downward pressure stroke           To Stop the Engine       inspectthe atomiser swirl and jet hole                 A spring loaded stop control is located near the                                                             normal engine controls and functions by cutting       Hand Starting                                                             off the fuel oil at the fuel injection pump         Engines not provided with electric starting           To operate pull the knob and hold in this       equipment are fitted with a          position until the engineceases  to rotate Ensure       in the valve cover                                   that the control returns to the run position other         The  is positioned on the          wise difficulty may be experiencedin restarting       front of the valve cover When the lever is raised   the engine1                                                                                                    Pagp Dl               DIFFICULT STARnNG                            Test the atomisersaf recommendedin SectionS                                                          and clean them if necessary    No Foei at Atomisers                                                            The lubricating oil usedshould be of an approved        a No fuel in tank        b Fuel lift pump not working Pressurered       type SeeAppendix            systemonly        Cc Slack connections in tbe fuel system         Sticking Rocker      rl Air in the fuel systemTrace from suction        Ir tbe rockers stick the causemay be  tbe use            side                                        of unsuitable oil sbortage of oil or sludging        Go over the whole of tbe above and make sure      Use only oil of an approvedtype SecAppendix    that the atomisers are fully primed and tbat the      Ir tbere is a sbortageof lubricant tbe passages                                                                                                         and     pinging tt or  squeakingtt noise is heard from   pipes to tbe rockers sbould be cbecked    each atomiser when the engine is turned over by    hand                                                 Fuel Oll                                                             It is essential to use clean fuel Dil fret from    Enginenot being turned over quickly enough           water dirt or sand The     Particularly in cold weather                        cation for fuel Dil is given in SectionS Providing      a Lubricating oil too thick Sec Appendix      clean fuel is usedno trouble should he experienced      b Battery not fully charged Fit fully charged    witb the fuel systembut dirty Dil willlead to trouble          battery                                        due to choked filters damaged fuel pump and      c Engine gummy due to standing in tbe           atomisers If the engine tends to run weIl for a          cold                                           short period and then to die awayor stop altogether                                                          tbe fuel system should immediately be suspected     Use thc cold starting equipmentif fitted See     Tbe trouble may be due to the lift pump not    Section C                                           working properly to a loost pipe joint allowing air                                                          to get into the fuel systemto a dirty fuel filter or    Low Compression                                      to a choked fuel pipe The prefilter in the fuel       This may be due to dry cylinders and piston        lift pump when fitted should be cleaned by    rings worn piston rings worn cylinders or leaky    washing in clean fuel Dil but tbe final filter should    valves                                               not need attention more than once in 1000hours                                                          when a completely new filter element should he                                          fitted If the conditions lead to dust or con      Test atomisers for  ping    or squeak    as    tamination of the fuel decreasetbe maintenance    already mentioned Ir any atomiser rails to give      interval    this  pinging or  squeaking noise when that         Always after disturbing fuel line washers    cylinder is pulled smartly over compressionand it    bas been made certain that the atomiser is fully      replace with ncw washersto ensurethe joints are    primed then the atomiser should he tested by         air tight    removingit from the cylinder                                                           Air Cleaner     Disconnect pipes on other atomisers while    making this test                                        In accordance with periodical attentions                                                           Section F clean the filtering element in paraffin                                                           and if of tbe oil bath type dip in oil    Sticking Valves      Trouble witb sticking valves may be due to             In those filters wbicb need it new engine oiJ    overbeatingtbe result of cboked atomisersor tbe      should be poured into the base up to tbe level    use of unsuitable lubricating oil                     mark                                                                                                                                                                                                                                                                                                                                                     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                                                                                                                                                                                                                                           z                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                0                                                 0                            I              5                                                                                                               z                                              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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         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                              r                                                                                                                                                                                                                                                                                      I                                                                                                                                                                                                                                                                                      11                                                                                               Page El                                          AND    DO KEEP THE ENGINE CLEAN                           DO drain cylinder block if engine is being left    DO keep this hook where it is conveniently             idle in frosty weatherdrain tap on fuel pump                                                           side of block       accessible                                                        DO remove  filler cap before    DO pay particular attention to lubrication            draining the cooling system    DO use only approved grades of lubricating oilo     DO close these drain cocks and refill with water    DO use only GENUINE PERKINS PARTS                     before attemptingto restart next morning                                                        DO when in doubt read this Manual    DO keep all bolts and Duts tight    DO eliminate all air from the fuel system and       keep all fuel oil unions AIR TIGHT             DO Nor guess For additional information con    DO examine engine oil level in sump daily and              tact suppliers of the Industrial Plant       replenish if necessary                                 Tractor or Engine    DO completely change engine oil in accordance       DO NOT neglect the routine attentions speci       with periodical attentions SectionF                   fied in SectionF                                                        DO NOT storefuel oil in a     DO renew element in lubricating oil filter in       accordance with periodical attentions           DO NOT race the engine in neutral       Section F                                       DO NOT run the engine unless the gauge    DO check oil flow to rocker shaft and examine              SHOWS OIL PRESSURE       the valvespringsin accordancewith periodical     DO NOT  with any adjust       attentions Section F                                  ments    DO use only filtered fuel oil Never tip into       DO NOT break the fuel pump or venturi seals       the tank a halfempty barrel of fuel oil the           remember if broken Jour Guarantee       bung of which may have been out fOTweeks               may be void    DO keep a check on the temperature of the           DO NOT continue to run the engine if the       cooling water lt should not be allowed to              cooling water boils       boil The best temperature is 170F or          DO NOT forget to keep the fan belt adjusted       77C but where a  cap       is fitted then the coolant temperature may       DO NOT continue to run the engine if black       be slightly higher                                     smoke is coming from the exhaust                                                        DO NOT if the engine stops without apparent    DO attend immediately to fuel and lubricating                                                               reason rail to make sure first of all       oil leaks                                                               that fuel is reaching the fuel pump    DO grind in valves when necessary                  DO NOT omit to wipe the engine over oc    DO check valve clearance from time to time                 casionally with a clean rag       010 in 25 mm with warm engine            DO NOT take the fuel pump to pieces    DO tighten cylinder head DutS in correct order      DO NOT use cotton waste or any fluffy cloth       See Fig H3                                          when cleaning    DO quote engine number when ordering parts         DO NOT use any but approved brands of lubri    DO keep essentialparts in store                           cating oil    DO drain radiator if engine is being left idle in   DO NOT subject the engine to continuous over       frosty weather                                         loadingJ                                                                                               Page FJ                                                 A TTENTI 0 N S FPOSTDELIVERY CHECKOVER                              EVERY SOHOURS   Af ter a customtr bas taken delivery of bis         Check fan belt adjustment See Section RPerkins diesel engille it is advisable in bis own    Clean air cleaner and renew Dil See Dateinterest thai a genera I check over of the engine                                                       Top up batteries with distilled waterbe carried out after the first 25 hours in service   It is also recommended that this  adopted where an engine bas been          EVERY 250 HOURSlaid up tor a considerable period before it is         Refill Greaseron Dynamoagain put into service                                 Clean water trap bowl and gauze element  This check over should comprise the following                                                       Clean element in lubricating oil filterpoints                                                        Drain oil trom sump and renew   I Drain lubricating oil sump and refill up to       the ruIl mark on the dipstick with new clean    Clean strainer in sump       oil Do not overfill When the sump is          Unscrew drain plug on final tuel filter replace       drained the sump strainer should he removed    plug when clean tuel appears       and cleaned                                     Flush radiator with clean water   2 Check and if necessary    adjust slow running                                                        Clean and treat the battery terminals       speed   3 Check external nuts tor tightness               These periods should be decreased    to 100hours   4 Check and adjust valve clearances010 in      maximum when engineis operating under adverse                                                      conditions        25 mmo hot   5 Check fuel pipes trom tank to fuel injection       pump common chamher tor leaks                 EVERY 500 HOURS   6 Check tor lubricating oil leaks and rectify     Clean and checkatomisers       if necessary                                   Renew feIt element in lubricating oil filter   7 Check cooling systemtor leaks and inspect       radiator water level                           Clean gauze trap in fuel oil filler when fitted   8 Checkfan belt tor tension                       Clean strainer in lubricating oil filler   9 Carry out raad test to check general per       formanceof engine                                                      EVERY 1000HOURS  10 Check enginemounting balts tor tightness   It is also advisable to check the cylinder head      Drain fuel tank remove and cleanstuds to ascertain that they are tightened to the       Inspect commutator and brushesof dynamocorrect torque as given on page Bl                    Removecylinder head cover   Thereafter maintenance periods should he in          Examine valve springs and check valve  the following instructions            ance   It is assumed thai electrical equipmentwill have     Inspect valve rocker assemblyfor  been checkedtor such points as dynamo           Renew element in final fuel filterrate of charge effectiveness    of connections andcircuits etc                                           Note The time for cleaning the air cleaner                                                      dependson operating conditions therefore under               Keep Eogioe Oeso                      extremely dusty conditions the time limit recomDAllV                                               mended above for cleaning should he decreased   Checkwatcrin radiator                              The correct maintenanceof the air cleaner win   Check oil level in sump make sure the engine      greatly assist in reducing bare wear therebyis level                                            extending the life of the engine                                                                                                               I                                                                                                               IPageF2PRESERV AllON         OF LAID      UP ENGINES            noted that deterioration of the fuel oil may be   Where an application which is powered by a             the months the application isPerkins engine is to be laid up for several months       idleit is advisable that some measure of protection             If this occurs the fuel oil may become conbe afforded the engine to ensure that it suffers         taminated with a waxlike substancewhich willno ill effect during the intervening period before       quickly clog the fuel filtering arrangement onceoperations are recommenced                              the engine is returned to service  It is recommended therefore that the following          Therefore before  inprocedure be adopted and applied immediately             respectof a unit primed with normal fuel oU whichthe unit is withdrawn from service                      bas lain idle for severalmonths it i5 recommended I   Thoroughly   clean aU external parts of the        that the fuel tank be drained and the interior of                                                         the tank thoroughly cleaned The fuel oU drained    engine                                                         off should be discarded as unfit for further use 2 Run the engine until wellwarmed through    Stop the engine and drain lubricating oil               Fuel oil contained in the remainder of the fuel                                                         system should also he dispelled and the paper    sump                                                         element in the final fuel filter  3 Drain water from radiator and engine                                                         which the system may then be rechargedwith    cylinder block                                                         fresh clean fuel oil 4   Remove and clean gauze strainer in sump                                                             starting the engineshould then      and ruil flow filter element                                                         be in accordancewith the procedure detaUedin 5 Clean out engine breathing system                   SectionC  6   Af ter replacing filters fill sump to correct                                                          NOTE      level with clean new lubricating oil or with                                                             Where a preseryativeis used in the lubricating      a suitable preservative fluid                                                          oil sump this should be drained off and replaced 7   Remove atomisers and spray into cylinder            by  prior to restarting the engine      bores a t pint 14 litres of lubricating oil      at the end of the storageperiod In the caseof a      divided between the cylinders                     preservative beingutilised to chargethe fuel system 8   Replace atomisers and turn engine slowly           this need not necessarilybe drained off before      over compressions                                  returning the engine to service Therefore wben 9   Remove air cleaner and any intake pipe which       a preservativeis used in this respect the relevant      may be fitted between the air cleaner and          manufacturers of the fluid should be contacted      venturi Carefully seal venturi orifice with       seekingtheir guidanceas to whether their product      waterproofed adhesive tape or some ot her          should he drained away prior to restarting the      suitable medium                                   engme10 Remove exhaust pipe and seal opening in                 When draining Marine enginesthe end plate ot    manifoldas in  9                                  the water pump should be removedto allow drain                                                         ageof any water trapped betweenthe bladesof the11 Disconnect battery and store in fully charged                                                         impellor Af ter the pump bas been drained the    condition Before storing the bartery ter                                                         impeUor sbould be lubricated with Marfak 2HD    minals should be treated to prevent corrosion                                                         Greaseafter which the impellor should be turned   The fuel system may either be drained and             to ensure penetration of the grease When thecharged with a suitable preservative or alternatively   engine is put back into serviceunder no circumit may be left primed with normal fuel oil              stancesshould it be run with the interior of the  Where the Iatter course is taken it should be         water pump dry                                                                                                               l                                                                                                               r                                                                                                                                                                                                                    PageF 3                                                   FROST         damage by trost should he          a Locking of the impelJor by ice due to thr      taken if the engine is to be left exposed to                pump drain hole being blocked by sedi      inclement weather either by adequately draining             ment      the water systemor where this is not convenient                                                              b The locking of the seaJthrough the freezing      an antifreezeof reputablemake and incorporating                                                                  of globuJesof moisture between the sea      a  inhibitor may he used                                                                  and the gland         Should it be your policy to protect enginestrom       Operators are therefore advised to take these      trost damageby adding antifreezeto the cooling        operating in temperatures beIoVv      systemit is advisable that the manufacturers of      freezing point       the relevant mixture be contacted to ascertain                                                              1 Before starting the engineturn the fan and      Yvhethertheir products are suitable tor use in                ater pump by hand this will indicateif      Perkins engines and also to ensure that their                                                                  freezing bas taken place If freezing bas      products wil have no harmful effect on the cool           taken place this should tree any ice forma      ing  It is OUT  experience that the         tion      best results are obtained from antifreeze which      conforms to British Standard 3151                      2 If it is impossibleto turn the pump by hand                                                                  the radiator and engineshould be filled with         Where the use of an antifreezeis contemplated           warm water      in respect of an L4 marine engine employing a                                                              3 To avoid this trouble the operator should      closed circuit cooling system advice should be                                                                  when all water bas been drained run the      soughttrom the relevant                                                                   engine tor a tew secondsat idling speed       their product will have no                                                                  thus dispersing any moisture remaining in      detrimental effect on the rubber impellor of the                                                                  the pump      freshwater pump                                                              Af ter an  bas been usedthe         When draining the water circulating system it                                                            cooling system should be thoroughly flushed in      is not enough merely to open the radiator drain                                                            accordance with the manufacturers instructions      tap the ODeon the cylinder block must also be                                                            before refilling with normal coolant      opened This tap is located midway along the      fuel pump side of the cylinder block                   If the foregoing action is taken no harmful         Wnen the engine is drained the water pump is       effectsshould be experiencedbut Perkins Engines      also drained but rotation of the pump may he         Ltd cannot be held responsible for any Crost      preventm by                                         damage or corrosion which may be incurred                                                                                                        Page G 1                                            FILTERS         A prime consideration in the maintenance of        upon the surface of the oil carried in a reservoir      that of cleanliness The air and       in the lower part of the filter casing     fuel oil that enters the cylinders must be scrupu        As aresuit particles of foreign matter are     lously clean and so also must the lubricating oil     carried into the oil by their own momentum and         In the Perkins L4 Diesel engine particular         are there trapped The air then passes     through a     attention bas beenpaid to the provision of means       steel wire element before Teachingthe indution     foT   in respectof these           manifold and in that element are deposited any         Three filtration systems are provided Air        other particles of foreign matter which stil remain     Fuel Oil and Lubrication and all that the operator    in the air after its contact with the oil     needsto do is to take steps to ensure that the         Maintenance     filters are kept in such a state that they will most                                                               Examine and replenish oil and clean in accor     effectively perform their functions                                                            dance with periodical attentions Section F                                                               Removetop cover and lift out element Wash                                                            in paraffin or fuel oil and allow to drain                                                               Empty oil from outer cas and scrape out                                                             Wash outer casewith para                                                            ffin or fuel oil and refill with oil to the level indi                                                            cated do not overfill                                                                top cover care to be taken                                                            to seethat the joint ring is in good condition and                                                            is sealingbefore tightening the top cover down                  Fig G J Gil BathAir Filter                       AIR Fn TERS       Air is filtered as it enters the inlet manifold by     use of ODeor the other of the followmg filters        1 Dil Bath type       2 Air Maze type Tractor type       The systemof operation of the air filters afford     a high measure of protection to the engine if     properly maintained                                                                              Fig G2   Prefilter       The time for cleaningthe air      operating conditions therefore under extreme     dusty conditions the time limit recommendedin         Air Maze type Tractor type     the periodical attentions for cleaning should be         In the tractor oil bath filter the air is drawn in                                    through the intake pipe and down through the       The correct maintenanceof the air cleaner will       centre of the filter to the oil bath Here the air     greatly assist in reducing bare wear thereby          impinges upon the surface of the oil and particles     extending the life of the engine                     of foreign matter are carried into the oil by their                                                            own momentum and trapped Tbe air then     Oil Bath Type Filter                                  passesup the sides of the filter through the wire       In this type of filter the incoming air impinges     male and out through the connection at the topJJJJ                                                                             r                                                                             JPage G2                                                                    Maintenance                         Examine replenish oil and clean in accordance                     with periodical attentions SectionF                         Remove oil container and empty out the oil                         Scrapeout all  thorough                     ly wash in paraffin or fuel oil                         Inspect the wire gauzeand if                      filter body from installation and wash in paraffin                     or fuel oil Allow to drain before reassembly                         Refill oil container to the level indicated do                     not overfill and reassem  bIe to filter          Fig GJ                                          Fig GS                     IMPORTANT NOTE                       Tbe efficiency of tbe cleaner is sucb tbat if tbe                     cleaning of tbe filter is not carried out at appro                     priate  be serious                     ly atfected becausetbe presenceof irnpurities in                     tbe cleanerwill restrict tbe air passage                       In tbe event of  below                     par it is a good plan first to cbeckup on tbe cleaner                     to ascertainif clogging of tbe filter is tbe cause                                   FUEL ou FllTERS                       Of all the factors on which                      of a Diesel engine  fuel oil                     is the most important The efficient operation                     and length of life of the fuel pump elementsand                     of the  on the use of clean                     fuel oil  secondthe provision of suitable filters                     third attention to these filters                        Protection fot the Perkins L4 engineis provided                     by the following filters readingfrom the tank to                     the pump                        1 Water Trap          Fig G4      2 Prefilter                                                                                         Pa1eG3                                                                   When reassembling   take care that a good joint                                                                is made betweenthe top of the bowl and the filter                                                                body as any leakage of air here that is on the                                                                suction side of the fuel pump rnay causeair looks                                                                in the fuel system                                                                Paper Element Filter                                                                   It is not possible to clean the paper element in                                                                this filter1                                                                  It should be renewedevery 1000hours Every                                                                250 hours unscrew the drain plug at the bottom                                                                of the filter bowl and allow fuel to fiow through                                                                until clean fuel oil appears Replace drain plug                                                                   To remove the element unscrewthe larger nut                                                                in the rentTeof the cover and drop the filter bowl                                                                clear SeeFigs G3 and G4                                                                   Remove the dirty element and throw away                                                                Fig G5                                                                   Before putting new element in position clean                                                                the filter bowl and inspect the relief valve                                                                   Ensure that the rubber joints are in good con                                                                dition if not replace by new    Fig G6 Fuel Filter in section showing fuel fiow throUgh                             element                                     LUBRICAnNG On FILTERS                                                                  The importance of using clean lubricating oil       Tbe arrangement of these two filters varies                                                                in the fust place and providing means to ensure    lccording to application Cn some applications    both filters are fitted on others either one or the    other is fitted       3 Paper element type filter    Water Trap      This filter varies according to application      The gauze strainer is contained in an easily    removablebowl and should be cleaned in accor    dance with periodical attentions SectionF     Prefilter        This units main purpose is to protect the fuel    lift pump It bas a comparatively coarseelement    See Fig G 2        This elementis contained in an easily removable    bowl and should be cleaned in accordancewith    periodical attentions SectionF       To remove element for cleaning unscrew    knurled nut at the bottom of the bowl Swing    the stirrup clear and remove filter bowl        Removeelement and wash in paraffin or clean    fuel oil Clean out and wash filter bowl in clean    paraffin or fuel oil                                                            Fig G7Page G4                                                                                                                                              Wash strainer in clean paraffin or fuel oil and                                                        replace                                                        Sump Strainer                                           f                                                           The sump strainer is a wire gauzestrainer which                                                        fits over the suction pipe to the lubricating oil                                                        pump                                                          It should be cleanedin accordance with periodi                                                        cal attentions Section F                                                          For instructions regarding removal and cleaning                                                                of sump strainer see Section P                                                        Maln Full Flow Filter                                                          The element of this filter should be removed                                                                                                                 r                                                        and thoroughly washed in paraffin The time                                                        period for cleaning and renewing the element is                                                        given in Periodical Attentions Section F                                                          It is a good plan to have a  to                                                        put this elementin the filter and the filter back into                                                        service again whiJst the other element is being                                                        cleaned This procedure saves time                      Fig G8that it is always clean in use is hardly secondtothe importance of cleanliness  in respectof fuel oil                                                                                                                 r   It is imperative therefore that lubricating oilfi1tersare not negiected Moreover if the periodical attentions recommendedare carried out andthc correct grade of clean oil useda very long lirecan he obtained from the Perkins engine   To  filters are provided                                                              r  1 Oil Filler Strainer  2 Sump Strainer  3 Main fuU flow FilterOil Filler Strainer    The purpose of this strainer is to prevent  the sump when the engineis bejagfilled with lubricating oU It should be cleanedin accordance with periodical attentions SeeSection FTo Removeand Clean Dil Filler Strainer  Tbe oi filler strainer is situated at the bottomof the Dil filler tube betweenthe Dil fiJler and thccylinder block  To remove for cleaning unscrew the bolt at                                                                        rthc base of the Dil filler remove oil filler and                                                                                Fig 09trainer                                                                                                                     r                                                                                                                     r                                                                                                                     r11                                                                                   rage G5                                                             5 Remove bypassvalve assembly This is                                                                 best etfected by means of a piece of wire                                                                 bent to form a hook at one end                                                             6 Removedrain plug at base of filter casing                                                                 and clean filter casing with paraffin                                                             7 Reassemble  filter unit in reverse order to                                                                 dismantling                                                             lt should be noted that the bypass valve                                                           assemblyshould always be replaced in a position                                                           adjacent to where the filter is mounted to the                                                           cylinder block                                                                                                                           CAUTION                                                               Ir tbe filter element is not cleaned as recom                                                           mended tbe flow of oil tbrough the filter is re                                                           stricted Tbis does not however prevent oil                                                           passing to the engine for when restriction takes                                                           place the bypass valve opens and permits un                                                           filtered oil to continue to flow round the engine                                                           The consequence      of this need not be described                                                           Do not tberefore omit to clean tbe element as                          Fig GIO                                                           prescribed     To Removeand Clean Element       Unscrew nut on cover and remove cover       Remove bypassvalve assemblySee Fig G7       Remove element See Fig G8       Cleanelementin paraffin and allow to dry before     replacing See Fig G9       Removedrain plug at base of filter casing and     clean filter casing witb paraffin       To  order of procedure     Ensure that tbe felt sealing ring around tbe by     pass valve piston and tbe rubber sealing wasber     are in good condition     NOTE  On certain applications the lubricating     oil filter is fitted as shown in Figs G10 and 11       To removeand clean the elementof this filter       1 Unscrewbolt and removetop cover       2 Removespring and        3 Removeelement       4 Cleanelementin paraffin or fuel oil Allow           to dry before replacing                                             Fig GIl 1                                                                                                       Page Hl                CYLINDER                  HEAO        The Diesel engine rarely if ever needs the             Remove push rods      periodical decarbonising that is accepted as a             Remove leak off pipes to atomisers      matter of course with the petrol engine insofar           Remove pressure pipes to atomisers      that in an engine operating on the diesel cycle           Remove atomisers      carbon beyond a superficial coating does not                                                                 Remove main leak off pipe      fonn and accumulatein the combustion chamber      and on the pistons as in the case of the petrol            Uncouple union on pipe connecting the venturi                                                               and the pneuma   tic governor where fitted      engine                                                                 Take off cylinder head Duts and removecylinder         Oing to its higher thermal efficiencythe valves     head completewith  and venturi      of the  also much more free from      trouble due to overheating that is of course          To RemoveValves      providing the engine is reasonably maintained             All valves are numbered  I                                                               to 8 commencing from the front of the engine        Af ter aperiod dependingupon the condition           The cylinder head is marked with corresponding      under which the engine is operated the valves           numbers opposite the valve seats see Fig H2      may need attention This will become apparent                                                                 Compress the spring cap and springs with a      by loss of compressionin which casea top over                                                               valve spring compressorand remove the splitcone      haul may be necessary                                                               collets Remove the spring caps and springs                                                               thus liberating the valve which can be taken      Preparation                                             out when the cylinder head is turned upside        Begin by assemblingall the joints and other            down      parts required as called for in the Perkins parts      List                                                    Grinding Valves                                                                  The valves and valve seats should be recon        Drain all water from the radiator and cylinder         ditioned in the orthodox way using grinding      block The drain cock for the cylinder block isJ   on the fuel pump side of the engine Disconnec      the exhaustpipe from the                                                                compound or by means of specialised                                                               The valve seat and face angle is 45                                                                                                     equipment       the cylinder head                                                                                  EXA1IUNA nON      Cylinder Head To Remove        Remove the air cleaner                                  Examine all parts for wear having in mind tbe        Take oir cylinder head cover                         following points        Uncoupleunion on oil pipe to rocker assembly         Valve Springs        RemoveDuts holding rocker shaft assembly               Valve springs deteriorate because of fatigue        Remove retaining plates and lift oir rocker           resulting from the combined effect of heat and the       above named oil pipe with it         normal working of the springs Af ter aperiod                                        Fig Hl   Showing Rocker Shaft Assembly J                                                                                                              rPage H2                                                            Cylinder Head                                                         headbottom faceis not lessthan 057ins 145mm                                                        inlet and 053 ins 135 mm exhaust Maximum                                                         not exceed140 ins 356 mm                                                        inlet and exhaust Check this by putting a straight                                                        edge across the bottom face of the cylinder head                                                        and measuring the distance between the straight                                                        edgeand the valve head as illustrated in Fig H2                                                          Tbe efficiencyof a diesel                                                         on the maintenance  of good compression therefore                                                        when grinding in valves make certain thai no                                                        signs of pitting are left on the seatings Valves                                                        should he ground in until a continuous  high                                                        mark is present the full way round the seating                                                        both on the valve and on the valve seatingin tbc Fig H2   Checking Yalve Head Clearance and method    head At the same time care should be taken to                   of marking valves                                                        avoid unnecessary grinding away of the seatolhe spnng becomesweak and is then prone to                                                        Valve Guidesfailure This of course applies to all types ofengines                                                  Examinethe guidesfor wear if necessary                                                                                                replacc  A ncw set of springs shouid be fitted whenever        with ncw guidestbe engine undergoesa major overhaul                                                          To remove oid guides  pressout or uso a suitRocker Levers and Bosbes                               ablc drift  Washthe rocker assembly  thoroughly in paraffin        To fit ncw guides  clean and remove any humExamine the rocker lever bushesfor wear The                                                          Smear tbc outer surfacc with clean oil androckers should be an easyfit on the shaft without                                                        using a suitable press drive home  play                                                        up to the collar Care should be exercised  It as a result of inadequate lubricatioD aDY        as the collar approaches the cylinder head asrocker busheshave seizedODthe rocker shaft the         the guides arc made of cast iron and  will have worked loose OD the bushes           comparatively brittIeShould this have occurred it will be advisableto fitnew rockers andjor bushes                                                        Cylinder Head  Should it be necessaryto dismantie the rockershaft                      bie as shown in Fig Hl            Remove exhaust manifold and clean off any                                                        carbon deposit formed in the cylinder headValves and Valve Seats                                                           Wasb out and thoroughly clean tbe water  There will be little wear of the valve sterns or      passages  in tbe bead  out andtheir guides provided that the lubrication of these     finally cleaning with  has always beenadequate                                                          If the water jacket of the cylinder head shows  Examine the valves for cracks Check wear             signs of excessivescale a proprietary brand ofof valve sternsand their fit in guides If the sterns   descaling solution should be usedare wam fit ncw valves  Number aU new valves to correspond with the            of the old valves                                                          It is not as a rele necessaryto remove the  When fitting new valves take care that the            covers of the combustion chambersduring a  valve head and the cylinder          rarely fonns in thesechambers     1          Cylinder Head                                                            Page H3           Should it be necessary to remove these covers           To tighten thecylinder headDutsa torque wrench         ncw copperjoints should be fitted when they are         shouldbe usedsetto the tensiongivenin SectionB         replaced                                               and pulled down in the order marked in Fig H3           lf ncw copper joints are not available the old          With tb push rods in position replacetbe rocker         unes may be used provided they are softened             shaft assembly Examine the oil pipe union and         before being refitted                                 ensure that it is in good condition Connect                                                                 union to cylinder head           To softenthe joints heat them to a dull red heat        Where necessary   reconnect the pipe from the         and quenchin cold water                                                                 pneumatic governor to the venturi            Special care is necessarywhen refitting these          Replace atomisers See Section S         covers to ensure that there are no leaks at the                                                                   Replaceleak off pipes and cold starting equip         joints otherwisethere will be a loss of compression                                                                 ment         and the efficiencyof the enginevillbe impaired                                                                   For fitting of fuel pipes see Section S         Reassembly                   Cylinder Head                                Valve Clearance                                                                      shouldbesetto 010in 25mIn            springscollars and collet                                                                    When adjusting valve clearances the engine            chamber caps and joints            should he turned to bring the respective  pistons to                                                                 T DC on compression          Fit exhaust manifold gaskets and exhaust         manifold                                                  To adjust slackenthe lock nut and with a 010in                                                                 25 mm  top of the valve                                                                 stem and the rocker lever face turn the adjusting          Head                                 screw by meansof a  the correct                                                                 clearanceis obtained Tighten the locknut           Before replacing cylinder head it is extremely         important to ensure that the cylinder block and         STARTING THE ENGINE         cylinder head racesare perfectly clean                   Proceed as instructed in Section C           When replacing the cylinder head a new gasket           Af ter warming up tbe engine should be sbut         should be used Cover both sides with a thin            down and the cylinder head Duts again tightened         coating of good jointing compound and before            witb a torque wrench set to the tension given in         placing over the cylinder head studs ensure that        Section B The nuts should be tightened in the         the gasket is correctly positioned The gasket is       order shown in Fig H3         marked to indicate hcw it should be replaced             Reset valve clearance to 010 in 25 mm           Having placedthe gas   ket in position ensurethat       Tbe cylinder head cover cao aow be replacd         the cylinder bead face is perfectly clean and place     A ncw joint should be fitted and care should b         in position over the cylinder head studs               taken to sec that it is correctly positioned                                                                                                                                                                                                                                        2                                                               6 J                                    Fig H3 Diagram showing order in which cylinder head                                                    nut must bc tightened                                                                                                                   Page 11         The pistonsare of light alloy with fully floating           Keep each piston and connecting rad assembly       gudgeon  pingwhich work in the bush fitted to the           separateeach to each as marked       connectingrod small end The gudgeon ping are       held in position by meansof circlips                        To           The pistons are fitted with three compression               Remove circlips trom the piston using long       rings and two oil control or scraper rings The             nosedpliers       top compression ring is a plain        the secondachrome plated  and                   Ta remave the gudgeonpins warm the pistons       the third is composed of four laminated rings               in liquid to a temperature of loooF120oF       Seefig J2                                               3849C The pins can then be pushedout         The tourth and fifth rings are slotted scrapers           To Fit Small End Bushes         Pistonsare numberedfrom 1 to 4 commencing                    Removepiston and connectingrad from engine       with No lat the front of the engine                                                                      Remove gudgeon ping see above         Each connectingrad and cap are also numbered                                                                      The small end bushes are a press fit into the       I and I 2 and 2 etc Seefig J1                                                                    connectingrods         The connecting rad and cap mating faces are                                                                      Pressout aId bush with suitable press       serrated la ensurecorrect positioning and should       on no accountbe filed                                         Remove any sharp edges around smal elld                                                                    parent bare                               To  Conn                               ecting Rod Assemblies                 Pressin new bush ensure that oiI hole Ul buih                                                                    coincides with hole in top of connecting rad                                 Remove cylinder head ass          Ream out new bush to guit gudgeon pin see                               embly seeSection H                Section V and check for parallelism                                 Removesump seeSectP                                                                    To Assembie Piston and Connecting Rod                                               Insert gudgeon pin into position to do this it                               seeSection P                      may be necessary to heat piston in liquid to a                                 Turn engine until two conn        temperature of looo120oF     3849C   The                               ecting roos are at bottom            gudgeon pin can then be pushed easily into posi                               centre then remove setscrews        tion                               and locking washers                    Tf original pistons are bejag used they must be                                                                    reassembled to the same connecting rods eg                          l1     Remove caps and hearing                                                                    piston stamped I must go with connecting rad                               shells                                                                    stamped with the figure 1 For markings of                           Push piston and connecting               connecting rad see fig J 1u                                                  rad out of the top of the       Fig J1 Showing cylinders                                    Fit circiips check to ensure that they fit correctly       markingof connec                                            into the grooves in the piston Tt is advisable to                      mg   ro                     d                         s                                Turn   engine   until   remaining   fit new circiips even if the oid ODesdo not appear                          connectingrods are at bottom              to be damaged or strained       centre then repeat removal operations i        Should there be carbon ridges in the cylinder       aDres remove them using a scraper for the                                                                    Fittings New Rings                                                                      Pistonsand rings must be thoroughly washedto       purpose                                                     remove any oil or greasewhich may be presentuPage 12                                                                           Pistonsand                                                                           Fit the  the top of the first                                                                      so that when held compressed    as describedabove                                                                      the ring ends point upwards Position the gap                                                                      at 1800to the first segmentgap                                                                         The third segmentshould be fitted on the top                                                                      of the secondso that whencompressed     asdescribd                                                                      the ring ends point downwards Position the gap                                                                      immediately above that of the first segment                                                                          Fit the fourth segmenton top of the third so                                                                      that when held and compressedthe ring ends                                                                      point upwards Position the gap above that of                                                                      the secondsegment                                                                          When the four laminations are fitted to the        r                                                                      piston check that they are fitted correctly If                                                                      fitted correctly there will appear a                                                                       gap between the bottom two laminations and the     Fig 12                                 of piston rings                      top two laminations as illustrated in fig J3I Plain compression                   ring 3                      When fitting ncw rings to original pistons2 Chrome     plated   com   4 and 5   Slotted   scraper   ring   clean out piston ring grooves using the old ring  presaion   ring  NOTE In the case of combine engines the chrome                                                                      from the appropriate groove for this                  tDlated compression ring is omitted and replaced by a                     Examine the piston skirt and if there is anyplain compression ring of the same type as fitted in                  scoring the piston must not he usedagainNo 1 ring groove                                                                         The piston should be examined carefully for                                                                      bruising of the ring groovesand to ensurethat the  Check rings tor correct gap which must be                           rings move freely in their grooveswithin the limits given in SectionV                                     NOTE When fitting new rings to wom   Fit the rings to the piston in the order shown in                  cylinder liners the ring gaps should be checkedatfig J2 The gaps of the two compression and                         a bore diameter of 4250 in 108 mmscraper rings must be arranged so that they areequally spacedaround the piston and not in line                       To Fit Piston and Connecting Rod to Cylinderwith one another                                                     Block                                                                         AII connectingrods and capsare plainJymarked  When fitting achrome plated                         with a number  their position incare should be taken to ensure that it is fitted                      the engine For method of marking see Fig JJcorrectly The ring is suitably marked to indicate                    hese numhers are stamped on that side of thehow it should be replaced                                            connecting rods and caps which are machined to   When fitting the third laminated compression                       take the locating lips of the hearingsring care should be taken that the tour laminations are correctly assem                         bied to the piston                                                                                             J   To assembieto piston proceed as follows   Examine the laminations and it will be observed                                                                               that the tree endsof the ring are not cut squaretothe circumference but slope away either to theright or lelt dependingon which war up the ring                                C I                                                                                               is tumed                                                                      I  Fit the first segmentto the piston 50 that whenheld horizontally in the palm of the hand andradially compressedthe ring ends point downwards Position this ring at the bottom of the                           Fig J3 Showing how the laminated  with the gap over the gudgeon pin bare                                  ring should be fitted into its groove       Pistons and Connecting Rodscontinued                                                               Page J3        When fitting pistons and connecting rods to           Fitting New Pistons      cylinder block and crankshaft ensure that the side        It is important when fitting ncw pistons to l    of the connecting rod which is stamped with the      number goes to the camshaft side of the engine                                                              checkthe distancefrom the crown of the piston to                                                              the face of the cylinder block        Insert the pistons and connecting rods into the      cylinder bores from the top ensuring that piston          When the crank is at top dead centre the crown      and Tod stamped No I are fitted into No I             of the piston must be 007 to 012 in 178 to 305      cylinder bore and No 2 into No 2 cylinder bore        mm above the face of the cylinder block If the      and so on counting from the front of the engine        piston standshigher than this then the crown must      When fitting assem  blies deal with them in the        be reducedby taking the necessary     amount otT in      order land 4 then 2 and 3 Turn the crankshaft          a lathe If the piston height is below the minimum      until the appropriate crankpins are at BDC           figure quoted above that piston must be rejected                                                              if a first class performance is requiredJ      To minimise the possibility of breaking piston      rings it is advisable to use a piston ring guide      Take care not to damage the rings Should                                                                To take this measurement  the piston assembly                                                              and connecting rad must be fitted to tbe cylinder      the piston accidentally drop partly into the            block and crankshaft as previously described      bore and is held suspended by a piston ring it      must be taken out again and the ring examined to          When assem  bied turn crankshaft to bring piston      sec if it is cracked or broken                         to T DC and place a straight edgeacrossthe top         Pull the connecting Tod to the crankpin and          of the piston and with a set of feeier gauges      insert the half bearing                                measuretbe distance between the straight edge                                                              and tbe top face of the cylinder block SeC        Fit cap and cap half hearing                                                              Fig J4        NOTE When replacing connecting Tod set      screws new locking washers must always be      used                                                   ConnectingRod Weigbts         The top and bottom halfshelis are not inter          The finishedweight of connectingrods in engine      changeable with each other due to the locating         sets should balance within two ounces      lips of the two halfbearings being offset in                                                                In order to effect this rods are batched as      relation to one another                                                              follow         Tlghten connecting Tod setscrews using a torque      wrench set to the tension given in Section B           Code         Minimum                 Maximum                                                               No          Ieight                Ileight                                                               12 4 Ib 10oz210kg 4 Ib 12oz215kg                                                               13    4 Ib 2 oz 215kg   4 Ib 14oz 221kg                                                               14    4 lb 4 oz 221kg   5 lb       227kg                                                                It is necessary therefore when ordering spare                                                              for an individual enginethat the appropriate code                                                              nurnber of the connecting rod set be quoted                                                                This code number can be found etchedeither on                                                              Nos I or 4 connecting rod on the machined                                                              shoulder which is adjacent to the fuel pump side                                                              of the engine                                                                 Cn spare rods however tbe code nurnber is      Fig 14 Checking di stance between straight edge and   present on each rod                        cylinder block facc                                                                                                                                                                                                                                  Page KI            Tbe liners fitted to Perkins L4 engines are            In order to facilitate the fitting of the liners       centrifugal cast iron wet liners Tbey are fianged        at tbe top and rubber type sealing rings are fitted        at the bottom sec Fig Kl                                                               when the two rings have been placed in position                                                               on the liner smear them with soft soap or soapy                                                               water          Under normal  liner would              Place liner in position and presshome by hand     only needto be renewedduring a major overbaul         ensuring that the rubber sealing rings remain in        but shluld it be necessary                                  to remove tbe liner for      their         any other reason this caD be carried out with 1   out removal of the crankshaft          If at any time the cylinder liners are removed        and th sameliners are to be refitted then before        removing the liners from the cylinder block        ensurethey are suitably marked so that they may        be refitted to their original parent bare and in tbc        same position in that bare that is thrust side of        the liner to the thrust side of the cylinder block        To RemoveLiners          Remove cylinder head See Section H          Remove Sump See Section P          Remove oil pump See Section P 1           and removepistons        SeeSectionJ          Remove liner using a suitabe liner removing        tooI          When the rubber sealing rings have cleared the        bottom landing the liner can be removedby hand        To Fit New Liners            When fitting ncw liners it is essentialthat ncw        pistons and rings are also fitted On no account        should old pistons he fitted to new Iiners For        fitting of new pistons see Section J          Over a period of service corrosion may have           The liners are a push fit and no force is required        taken place at the inner ends of the Iandings         but should a liner require more pressurethan caD        This corrosionand any burrs which may he present       be applied by the fingers place a suitable piece                                                           of wood across the top Bange and press home        should be removedwith a scraperor emery cloth          Fit the rubber sealing rings in the grooves            Af ter fitting the liners the cylinder block should                                                               be water tested to a pressureof 20  25 Ibs per 1     provided in tbe Iower diameter of the liner See                                                               sq in 14  176 kgjsqcm        Fig KI Care should be taken not to stretch        theserillgS as they are not elastic and if stretched      Reassemble engine as required and to instruc        lViII not return to their farmer size                 tions given for the various componentsJ                                                                                                          Page L             CRANKSHAFT AND MAIN BEARINGS                           Af ter regrinding the sharp corners on the Dil    1       Tbe crankshaft runs in       waysshould be removedand the           able shell hearings which are lead bronze lined        detectedagain and demagnetised          and indium flashed                                     NOTE It is important that the RADII on the                                                               main journals and Crankpins are maintained If          To              Remove cylinder head See Section H               theseare neglecteda fatigue fracture is liable to             Remove sump See Section P                         occur             Remove lubricating oir pump See Section P                     CRANKSHAFr DATA             Remove pistons and connecting rods Sec              Description Dimensions            Remarks          Section J                                             Main Joumal Diameter            Take off timing case front cover and remove             STD      2998252999                                                                                           ins  Surfacefinish          idler gear                                                                            not to exceed                                                                              76167617mm             Remove timing case bottom cover                     010 in    2988252989ins 16 micro ins             Remove starter motor                                                                4 microns                                                                  25 mm   75907592mm             Remove flywheel and assembly                        020 in    2978252979                                                                                           ins             Remove the cranks  haft Teat end seal               51 mm    75657567                                                                                         mm             Remove main hearing caps and half hearings          030 in   2968252969ins             Lift out crankshaft                                                                76 mm      75397541                                                                                           mm          Crankshaft Regrinding                                  Mam Joumal Rad                                                                                          0          Eaminationror Wear              regrind the Crankshaftthe                      kin                  Must be          following points should be checkedto ensureit is                             t 015 in    maintained          suitable fot further grinding                                      318356mIn             Tbe Crankshaft should be crackdetected and          Rear Main Joumal Width                                                                   STD       2062520635ins       Not to exceed          then demagnetised   in order to remove any polar          isation which may be present                                         52395241mm       20785 5279             Tbe main joumal and crankpin                                              mm after re          be checkedfot ovality and measuredto ascertain                                              grind                                                                  Crankpio Diameter          the next appropriate size to which the Crankshaft          caD be reground ie 010 25 mm 020           STD        2748252749 iBs     Surfacefinish          51 mm 030 76 mm from Standard If                         69816982 mm      not to exceed                                                                  010 in   2738252739 ins      16 micro ins          the crankshaft requires regrinding below 030          76 mm it is recommended     that ncw crankshaft    25 mIn    69556957 mm      4 microns                                                                  020 in   2728252729 ins          he fitted             It should be noted however that in the home        51 mIn    69306932 mm                                                                  030 in   2718252719 ins          market an exchange   scheme   is in operation where          by reconditioned Crankshafts are available at a         76 mm     69046906 mm                                                                  Crankpin Rad          certain cast providing the Crankshaft being       exchanged   is not damagedand is suitable for re                                0                                                                               0Jt in               This must be          grinding to a limit of 030 76 mm                                                                                       l 015 in    maintained          Regrinding                                                         476513mm          All the  required for re         Crankpin Width          grinding the Crankshaftis givenunder  Crankshaft        STD       17801785ins         Not to exceed          Data  All limits listed thereunder must he                           45214534                                                                                            mm       180 4572      adhered to and the main joumals and Crankpin                                                mm after re          must be free from grinding marks                                                           grind                                                                   Page L2                                                          Crankshaftand Main   Should the Crankshaft rear flange need re              The thrust washers fit in the recesses  the rear i in 952 mm of the flanse        on either side of the rear main bearing housing andwidth must not be ground The           should be assembied with the flat steel side to theof the flange width may be ground to a minimum          hearing housing The end float of the crankshaft isdiameter of 5238 in 13305mm Surfacefinish         measured between the crank cheek and the thrustnot to exceed 16 micro ins 4 microns               washers This measurement should be between                                                        0085 and 0155 in 22 and 39 mm If greater To Fit Ne Main Bearings and Thrust Washers           or smaller than this amount fit new thrust washers    The main bearings being of the prefinished         or oversize thrust washers if necessary strip type the fitting of these should present nu difficulty                                            Crankshaft Rear End Seal    To prevent errors occurring in fitting top and         On early enginesthis  a housing bottom half bearings the locating lips and the       and rubber seal recesses  in the caps and bearing housings are           When removedit should be inspectedfor cracks offset in relation to one another                     or scratches on the bearingsurface If this surface    The bearing caps and crankcaseare numbered          is damagedin any way a new sealshould be fitted 13 No I being at the front of the engine              To fit a new seal proceed as follows     To avoid the caps being inadvertently assem  bied      Removeold sealby pressingit out of the housing to the crankcasethe wrong war round the locating                                                           Lightly smear the outer edge of the new seal dowels and dowel holes are also offset                                                        with soft soap    Under normat  the time the main  to be renewed  the crankshaft      Place seal in position and press in by hand as will Deed to be removed for regrinding How           far as it will go this should be approximately halfever if for any reasonone or more of the bearing      way in Pressing in halfway by hand ensures should have to be renewed or removed for in           that the seal is  caD be carried out on Nos land 2           Pressin with a pressuntil the bevelled edge or bearings without the necessity of removing the         the seal is level with the outer face of  from the engine   Proceedas follows     Remove sump See Section P                        MODIFIED CRANKSHAFf AND REAR ou   Take olf tbe cap of the hearing in question                       SEAL   Slacken remaining bearing cap setscrewsone              Later L4  a crankshaft and or two turns                                          rear oil seal of modified design Neither of these   Remove the lower half of the bearing from the        componentsare individually        with bearingcap                                            their earlier counterparts so that if the latest type   With a suitable piece of wood push out the top       crankshaft is 0 be fitted to an engine previouslyhalf of the hearingby rotating it on the crankshaft    utilising an unmodified crankshafta modified rearapplying the tooi to the side opposite the locating     oil seal must also be fittedlip The locating lips are on the camshaft side            The modification to the crankshaft affects thatof the engine                                          part of the shaft around which the rear oil sea   Inspect the bearing shells and if thor require       is fitted  this portion of therenewing inserta new half hearing in the top          shaft had a nomina diameterof 5 in  plain end first Fit new half hearing to     the equivalent nominaI dimension in the case ofcap Do not remove more than one bearing at             the modified shaft is 3i in 7938 mm Furthera time                                                 more the modified crankshaft has a shallow spiral   Replacecap and tighten setscrews    Ijghtly bfore   oil groove machined to a depth of 004008 inproceedingto next bearing                              10 to 20 mm in that section upon which the   Having replaced the bearings and caps pull           rear scat bearsdown the setscrews     with a torque wrench set to         With the advent of this latest type crankshaftthe tension given in Sction B                         the bore of the modified rear Dil seal is machined                                                                                                                                                                                                                                                                                                                                                                                                                           Crankshaftand Man                                                            Page L3      to accommodatea rubber cored asbestosstrip              9 Swivel the  on the shaft      This strip consists of two sections one for each           to bed in the strips and to establjsh that the      of the two  now composethe                assemblyturns easily on the shaft      seal cover The strip itself farms a positive seal                                                              10 Bolt the seal housingin positjon on the block      with the rear end of the crankshaft                        and rcoar main hearingcap and finally tighten        When fitting the seal with the crankshaft in              with setscrews      position the following procedure should be      adopted                                                Replacing Crankshaft       I  Set up a half housing in a vice with the seal        Ensurethat all oilways are clear SeeLubricating                                              Diagram Fig P2      2 SettIe approximately I in 254 mm of the            Check main bearing setscrewsfor stretch or      strip at each end into the ends of the groove       damage to threads Affected setscrewsmust be         ensuring that each end of the strip projects                                                              scrapped         010020 in 2551 mIn beyond the half         housing joint face Allow the middle of the            In no case should setscrewsother than those         seal to bulge out of the groove during this          supplied by the engine manufacturer be used as                                                              they are of special heat treated highgrade steel         opcration                                                                Clean bearing housmgs and place top half      3 With the finger or thumb pressthe remainder           of the strip into the groove working from the           centle Then use any  bar                                                              hearings in position                                                                Place crankshaft in position           to further bed the strip by rolling and pressing     Fit lower halvesof hearingsto hearing caps and           its inner diameter This procedure takes           place in position Ensure that the thrust washers        advantageof the friction between tne strip         on No 3 hearing are fitted correctly           and the groove at the ends to compact the                                                                Place tab washers in position and tighten set           rope whilst ensuring that the projections of                                                              screws         the end racesof the rope remain as set Fit          sameto other half housing in similar manner           For final tightening of the setscrewsa torque                                                              wrench should he used set to the tension given       5 Remove all traces of the old joint from the         in Section B          cylinder block rear face and fit new joint          treatedwith a  compound              Lock setscrews  in position by meansof the tab                                                              washers       6 Lightly paint the faces of the two housings           Fit crankshaft rear end oil seal as previously          with a suitable jointing compound                  described       7 Spread a film of graphited greaseover the              as required lnd to tbe          exposedinner diameter surface of the strip          instructions given fot the various operations       8 Assemblethe half housingsaround the rear              It is important that new locking washers of          of the crankshaft and fasten together by the        the correct type are fitted when setscrewshave          two setscrews                                      been removedJJJJ                                                                1                                                                                                                                                Page M                                                                                                 DRIVE M                    To RemoveCamshaft                                         and plaiD washersfinally lock                                                                          setscrews                                                                                    with locking wire                      Removecylinder head SeeSection H                      Remove timing case front cover                       To Replace Camshaft                      Remove sump See Section P                            See tbat tappets are in position                                                                               Replace camsbaft                      Remove lubricating oil pump See Section P                                                                               Replace idler gear but do not lock idler gear                      Remove timing case Power Take Olf facing            retaining setscrew                    cover                                                     Reset timing SeeSection N                      Note timing marks See Section Nl                      as required and to tbe         1            Removeidler gear                                     instructions given for tbc various operations                     Ir engineis in a swivel stand turn enginecom        To RemoveFoei Pump                   pletely over Ir not lar engine over at an angle         Removefuel injection pipe lines from atomisers                   This wilt prevent the tappets dropping out when         and fuel pump                   the camshart is removed                                                                              Disconnect fuel supply lines                      Removecamshaft                                         Remove tbe  tbe fuel pump                                                                           to tbe timing caseand removefuel pump                   To RemoveCamshaft Gear                                   To remove tbe fuel pump gear remove tbe three                     To  from camshaftremove              tbe gear to tbe fuel pump                   the three setscrews in the centre of the gear          adaptor                   The gear can now be removedfrom the camshaft                                                                            To Replace Foei Pump                                                                              Ir the gearbas  tbe fuel pump                   To  Gear                                                                            refit gear or if necessary                                                                                                        fit                      Tbe three clearanceholes drilled at equaI angies         The three slotted holes in tbe gear are for fitting                   are the holesfor attachingthe gearto the camshaft       the gear to the fuel pump adaptor                   Tbc three slotted holes are for use with the fuel                                                                              Fit fueI pump to timing case                   pump                                                                              Time fueI pump in conjunction witb the engine                    When fitting  to the camshaft        as given in Section N                   turn the camshaft untiI No I cam is upright It           Replace atomisers                   will be observedthat a tapped hole on the cam                                                                              Connectup fueI supply lines                   shaft hub is also at the top in line with No I cam                   Look at the gear and it will be noticed that one of        Replace fueI injection pipes                   the holes in the gear has the letter  D  adjacent       When fitting a new or  pump                   to it                                                  remove the pump  and pour suffi                                                                        cient engine oil into the spring chamber untiI oil                     Placc the gear on the hub with thesetwo holes         comes out of the overflow Refit the inspection                   in line                                                 cover     1                      J     1                                                                                                         Page N 1                                          TIMING                      N                         NOTE When checking and adjusting valve clearances the engineshould                         be turned to bring the respective pistons to TDC on compression        The timing or resettl1gof the timing on the         the fuel pump adaptor in line with the scribed line      Perkins L4 engine can be simply and expediently        on the pointer of the fuel pump      carried out if the following instructions are fol                                                               Rotate camshaft to bring inlet and exhaust      lowed                                                             valvesof No 4 cylinder to rocking position        It is well to remembr hat if tbc cylinder hcad                                                                With the crankshaft set as       has been removed it does not in any way affect                                                             idler gear in position ensuring that the timing   the timing of the engine                                                             marks line up correctly Replace idlcr gear set                                                             screwtightcn and lock with tab washer      MARKINGS        The timing gears are marked as shown in Fig N1     VALVE nG      so that if for any reason the timing has to be                                                                 If for any reason a new camshaft gear bas been      broken the engine can easily be reset to its                                                             fitted it may be necessaryto retime the engine      original timing                                                             Fit replacement gear as instructed in Section L        Tbere are two different markings on the Cuet         and proceed as follows       pump adaptor One is a scribed line marked      with tbe letter  S whicb should coincide witb          Bring Nos I and 4 pistons to T DC That                                                             T DC bas been obtained on Nos I and 4 pistons      tbe scribed line on the pointer of the Cuet pump                                                             can be checked by examining the flywheel or the      wben the engine is set at T DC firing on No r                                                             crankshaft at the front end where the key for the      cylinder Sec Fig N 2                                                             fan belt pulley should be at the top of its periphery        Tbe altemative scribed line on tbe fuel pump                                                               Remove idler gear      adaptor denotes spill timing 21 BTC In the      caseof L4 enginesfitted to the Marshall Crawler      Tractor the spill timing is 24 BTDC         To obtain access to the fuel pump markings it      is necessary to remove the inspection plate situated      on the left hand side of the timing case      To Reset Engine to its Original Timing        Remove atomisers        Brlng Nos I and 4 pistons to the top That      TDC bas been obtained can he checked by      examining tbe flywheel or tbc front end of the      crankshaft where the key of the fan belt pulley      should he at tbc top of its periphcry        Set fucl pump gear with scribed linc  S on                                                                                                               1                                                                                                               1Page N2                                                                                   Turn camshaft until equal lift is obtainecl on        Turn thc enginc through two revoluons of thctbc tappcts of No 4 cylinder                        crankshaft and checkthe fuel pump timing accord                                                      ing to instructions for checking injection timing  Turn fuel pump gear until scribed line markedwith the letter  S on thc fuel pump adaptor isin linc with the scribed linc on the pointer on the   TO CHECK TIlInNGfue pump                                                        To check timing proceed as follows  Placetbc idler gear in position                    a Valve Timing                                                        Remove valve cover  Replace push rods and rocker sbft assemblyCheck valve and injection timing If found to be        Remove atomisers                                      correct tighten idler gear retaining jetscrew andlock witb tab washer For         Turn engine until equal lift is obtained on the                                                      tappets of No 4 cylinder In this position setand cbeckingvalve timing secmethod To ChecJTiming                                                      the clearance on No I inlet valve to 025 in 64mm   r                                                         Turn enginein the normal direction of rotation                                                      until the inlet push rad of No 1 cylinder just                                                      beginsto tighten This is the point at which the                                                      inlet valve begins10 openINJECTION TIMING                                       Checkthrougb the inspectionhole in tbe flywbeel        T                                                      bousing that tbe flywbeel T DC mark is centra   If thc fucl pump bas beenremovedor a replace                                                      witbin tbe inspection hole Ifthe TDC mark onment pump is to bc fitted it will be necessary to     the flywhee is witbin plus or minus 3 of TDCtime thc fucl pump in conjunction with thc engine                                                             r                                                      position then the valve timing is correct  Proceed as follows                                   Having checked the valve timing thc valve  Remove atomisers                                                       be reset to 010 in 25 mm                                                      with engine warm When checking and adjusting                                                                                                               r                                                      valve clearancesthe engine should be tumed to  Remove valve cover                                 bring the  to TDC on com                                                      pression  Turn enginc to bring Nos 1 and 1 pistons totbc top No 1 piston being on thc compression        b Injection Timingstroke thc rockers of No 4 cylinder being justrocking                                                To check the fuel pump timing proceed as                                                      follows   Check that Nos 1 and 4 pistons ace at T DCby cxamining thc flywhccl                               Turn the fuel pump gear until the scribed lino         Remove valve covermarked  S  on the fuel pump adaptor is in lino                                                             r                                                         Remove tbe inspection plate 011the side of thewith the scribed lino on the pointer of the fuel                                                      timing casepump                                                        Turn the engine in the normal direction of             r  Providing tbe engine is still set as mentioned      rotation and bring Nos 1 and 4 pistons to the topabove the fuel pump maf then be placed in            No 1 pistcn being on the compression strokposition and tbe securing          the rockers of No 4 cylinder being just rocking        T                                                                                                                                                                                           r                                                                                                                                                                                                                                                    Timing conllnued                                                                                   Page N3               Check that Nos 1 and 4 pistons are at T OC               Sbould tbc scribed lines mentioned above not            by examining the flywheel                                  coincide adjustment CaDbe made by slackcning                                                                         tbe three setscrews in tbe ccntre of tbe fuel pump               Check through tbe inspection hole that the                gear tben turning thc fuel pump adaptor in thc             scribedline marked  S  on the fuel pump adaptor          direction required             is in line with the scribedline on the pointer of the         To obtam accessto tbe  tbe             fuel pump See Fig N2                                   plate on thc front uf tbe timing casecover1                                         Fig N2 Diagram showing fuel pump gear and scribed linesJJ    I                                                                                           r1                                                                                                                Page PI                                                                 SYSTEM               CP      Note Lubricating Gil SpeciJications                                          in Appendix            are in line with the feed from the centre main                                                                 bering oil flows to the top face of the cylinder         Tbe importance of correct and clean lubrication         block Since thesedrillings coincide but momen      cannot be stressed toa highly and all referencesto         tarily for every revolution of the camshaftonly a     engineoil should be taken to mean lubricating oil      which raIls within the  in the      Appendix Care should be taken that the oil                                                                  of oil is deliveredto the drilling                                                                 leading to the top tlce of the cylinder block                                                                    This drilling matchesup with a vertical passage      chosenis that specifiedfor the climatic conditions          to the top face of the cylinder      undcr which the engine is operated                        head from whencethe oil is taken by an external         Tbe sump should be filled with suitable lubri          pipe to the hollow rocker shaft Drillings in this      Iantto the correct level but do not attempt to          shaft allow the oil to passto the rockersthe over      overfill above the ruIl mark Before filling or           flow being returned to the sump by way of the      checking the dipstick ensure that the engine is           push rod chamber      level                                                        Gil also flows from the front main hearing                                                                 bracketvia a hole drilled in the front of the cylinder      Gil Circulation                                           block to the idler gear spigot from which it escapes         Tbe system of lubritation is pressure reed to          through a drilling in the boss of the idler gear      main and big end beanngsto camstlaft bearings             to lubricate the timing gears      and to vaJverocker assembly                                  A further drilling from No I Main Bearing         The pump draws oil through the strainer from            Housing conveysoil to the front       the sump and delivers it by an extern          al pipe     surplus oil returning to the sump      inside tbe  a drilling in tbe side      of tbe cylinder block  thence through the lubri          Oil Pressure      cating oil filter bracket to the lubricating oil filter     Sec tbat oil pressureis registeredon the gauge         From the tilter it is delivered througb a second        The actual pressure may vary with individua      drilling in the lubricating oil filter bracket and         engines and under different operating conditions      cylinder block to the pressure rail wbich is an            but shoud he 2550 Ibs per sqin 176352kg      internal passagewitbin the crankcase holes are            sqcm at working temperature and maximum      drilled which lead from the pressure rail to tbe           engine speed      crankshaft main hearingsand holes dril led in tbe             Ir the oil pressureas registeredon the gauge is      cranksbaft carry oil to the big end bearings              below normal check the following in tbe order      Surplus oil returns to the sump                           gJvenbelow         A seal prevents oil leaking from the rear end             I Dipstick Ensure that there is sufficient oi       of the crankshaft                                        in the sump         The smalt end bushesare lubricated by splash              2 Oil pressure gauge Check for accuracy      and lubricating oil mist                                  with master gauge                                                                   3 Lubricating oil filter May be choked clean          A passage   from tbe centremain bearing conveys        or rencw         oil to tbe centre camshaft hearing which is also       in open communication with the top face of the            F                                                                   4 Sumpstrainer This may bechokedremove       cylinder block by means of a vertical drilling           clean and replace for removal instructions sec          In conjunction with tbe          Page P2       this Jatterdrilling servesto provide oil at a teduced        5 Lubricating oil pump Ensure that suction       pressureto tbe top face of tbe cylinder block and         and delivery pipe unions are tight       thenceto the rocker assembly                                6 Oil pressure relief valve Foreign matter          The camshaft journal contains two drilled              may be preventing the valve from closing For       passages  and when as in Fig P2 these drillings       cleaning ifistructions Page P3                                                                                                                1Page P2                                                                    Lubrication                                                         the climate in which the engine is operated See                                                        Appendix                                                        General                                                            Particular care must be taken to wipe oir any                                                        water which may have splashedonto the enginear                                                        any time sincewater which may find its war into                                                        the sumpfrom the exterior will tend to form sludge                                                            Failure to change the oil at the recommended                                                        intervals is  the oil seems    good                                                        at the time of recommended        change                                                            Dirty lubricating oil filters aggravatethe forma                                                        tion of sludgewhich in turn will further choke the                                                        filters Regular filter inspection and cleaning at                                                        the specified periods is essentialsee Section F                                                        To RemoveClean and ReplaceSump Strainer                                                           Drain oil into a                                                                                              after removing                                                        the drain plug Remove setscrews      holding sump                                                                                                                OP                                                        strainer cover This cover is situated near the                                                        drain plug                                                           Drop cover and strainer will come away witb                                                        cover                                                           Wash and clean strainer in clean fuel oil orThe OU PressureRelief Valve                            paraffin                                                           To reassemble   reversetbe order of operations    r   1he oil pressure reliefvalve which is incorporated                                                        Ensure that the oil pump suction pipe enters thcin the pump prevents the  ex                                                        hole provided in the   as might  the engineis cold                                                   If reasonablecare is taken when removing and                                                        replacing sump strainer cover tbc joint wiIl not   When the predetermined pressure is exceeded                                                        require renewingevcry time the strainer is removedthe valve  spring and sameof theoil is bypassedback into the sump Tbat continuesuntil the oil warms up and fiows at the desired                                                        To RemoveSnmp                                          roressure Tbe valve then closes                          Removedrain plug and drain ofT   oil   Cn early engines the oil pressurerelief valve           Remove  integral with the bottom cover of the           Remove sump strainer as  oil pump and to obtain accessto the            Removeall setscrews securingsump to crankcasevalve for cleaning seePageP3                         and lower sump   As from Engine No 6032453however lubri              Removeall traces of old joints and sump corkcating oil pumps ipcorporate a detachable    pressure   strip from timing casebottom cover and rear main relief valve which is screwedinto the outlet side      bearing capof the pump body SeeFig Pl The action ofthis valve is identical to that described above        To Replace Sumpand cleaning instructions are given on page P3                                                          Assembiencw joints and cork stripsMen to Renewthe Oil                                      Lightly smear crankcase races with a thin  Thc oil in tbc sump must be drained in accor         coating of jointing compound and place jointsdance witb periodical attentions Section F and          in position ensuring all holes line up                                                                replacedby new oil of a  for       When placing joints in position it is importantIu      Lubricalion        that the mitred ends go right up into the recesses         Reassemble                                                                                                          Page P3                                                                               bottom cover to pump using a ncwu      of the timing case bottom cover and rear main       hearing cap          Cut cork joints to required length and lightly       coat one face and the two sideswith jointing com                                                               bottom coverjoint                                                                 When reassembling bottom cover to pump                                                               note the waming gjven on page P4                                                                 On engines subsequent to No 6032453 the     pound and place in position                            lubricating oil pump relief valve may be rmloved          To facilitate assemblyof the sump screw two         and cleaned without dismantling the pump fromu       guide studs into the crankcaseone on each side        the engine          The studs will position the sump accuratelyand         Af ter the sump bas  locking       prevent displacementof the joints                      wire and unscrew the relief valve assemblyfrom          Placethe sump in position and insert the screws      the sideof the oil pump body                                                                of the valve assembly should be in accordancewith          Remove guide studs                                                               instructions detailed below          When all the setscrews have been insertedu       tighten evenly all round Do not overtighten            To DismantIe the Oil Pump       setscrews                                                Removepump from engineSeeabove          Replace sump strainer and cover plate as               Removelocking wire from suction and delivery       previously described                                   pipe banjo balts and remove pipes In the case1      To Removeand Refit OU Pump                                                               of  No 6032453it will be                                                               necessary   to remove the relief valve assemblyin         Remove sump and sump strainer see previous                                                               order to releasethe delivery or outlet pipe       headings                                                                 Removethe setscrews      securingthe bottom cover         Disconnect Dil pump delivery pipe from the                                                               and gear housing       crankcaseunion                                                                 Tbe idler gear can now be removed          centre main hearing cap       thus releasingthe Dil suction pipe                       Pressoff spiral driving gear         Unscrew the lubricating oil pump locating set          Tbe drive shaft and gear can now be removed       screw This screwis situated outside the cylinder       To remove gear from shaft use suitable press       block See Fig Pol                                     To remove the idler gear shaft withdraw the         The oil pump may ncw be removedSeeFig Pol         split pin fust  the shaft caD then be pressedout                                                               Unless areplacement shaft is to be fitted it is not         To refit reversethe above order of operations                                                               necessaryto remove this shaft and pin       To Removeand Clean OU PressureRelief Valve               Tbe cleaning of the pressure relief valve bas         With engines prior to No 6032453 the oil            been dealt with under a previous heading       pressurerelief valve forms part of the oil pump       bottom cover The breaking pressureis set and           Inspection1      adjusted at the factory and unless special test           All the parts of the pump should be cleaned       equipmentis available no attempt should be made         and inspected for wear The fit of the shaft in       to dismantie the oil pressurerelief valve              the pump body should be carefully checked The         To obtain access  to the relief valve foT cleaninR   shaft should work easily without lateral movement       proceedas follows                                     in the bushesfitted in the body If the bushesare                                                               wom they should be replaced      Removesump and sump strainer                                                                 If tbc oil pump gears show signs of wear they          oil pump from engine                                                               shouid be renewed         Removethe setscrews    securingthe bottom cover       and removebottom cover                                 To Reassemble   the Dil Pump          Wash the valve in clean fuel oil and blow the          Pressdrive shaft gear on to shaft The end of       valve dry with compressed   air                        the shaft should be flush with the bottom faceof the         Secthat the balI and bali seatare perfectly clean     gear       and bedding correctly                                    Assembiegear and shaft to pump body                                                                                                                                                                                                                                          T    Page P4                                                                                                                                                                   Lubrication System continued                                                                                                                          Assembie idler gear pump housing and joint            Using a suitable press press the spiral driving    to body secureby using setscrewswith suitable         gear on to tbe shaft Tbe shaft end should be    distancepieces                                       just level with the top face of the spiral gear                Check that there is             idler gear and bottom    and gears                                            coverto pump body usingnew        Place bottom cover joint on bottom face of                                                          for tbc secunng setscrews                                 housing and with a straight edgeand feeier gauge     WARNlJlGWHERE APPLICABLE WHEN    check tbe  straight edgeand        REASSEMBLING BOTrOM COVER CARE    face of gears This  be 002in        MUST BE TAKEN TO ENSURE THAT    to 006 in 051 to  152mm ft is important that                                                          THE COVER IS ASSEMBLED WITH THE    this clearancedoes not exceed006 in 152 mm    otherwisethe pump output will be insufficient and     OIL RELlEF VALVE ON THE DELlVERY                                                          SIDE OF THE PUMP                                          the lubricating system adversely affected      New joints should be used when carrying Qut           Replace suction and delivery pipes and lock    the above test                                       banjo balts with locking wire                           pump housingand idlef gear            Reassemblc                                                                      pump to enginc                                                                                                                 r                                                                                                                   r                                                                                                                r                                                                                                                                                                     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                                 W A TER                 PUMPQ              The cooling water is circulated by a centrifugal                   When reassemblingto cylinder block a new           type pump mounted on the front end of the                          joint should be used to cnsure that a watertight           cylinder block and driven by a Vee belt from                       joint is made           the engine crankshaft Provision is made for                                                                              To Dismande Water Pump           fitting a fan on the front of the water pump pulley                                                                                Remove split pin from slotted nut securing                                                                              water pump pulley and removenut and washer              Tbe pump does not require greasing as the           Iearingsare treated with a special greasebefore                         Removewater pump pulley           assembly                                                               Removeimpeller from shaft                                                                                                            Remove front bearing re                                                                                                          taining circlip using long                                     f3                                      j                                                                                       1r14                                                                                                          nosepliers for the purpose                                                                                                            Removerear seal                                                                                         G                                                                                          Ol                                                                                                             Using a suitable press                                                                                                          press the shaft out of the                                                                                                                                                                                                                                                                                                                        body from the impeller end                                                                                                          leaving tbe thrower loose                                                                                                     in the body Thesecan now                                                                                                          be removedfrom the body                                                                                                 Removethe front sealand                                                                                                  tlanges The two bearings                                                                                                       and distance piece will still                                                                                                          be on the water pump shaft                                                                                                     These can be removed byJ                                                                                                                                                                                                                                                     J                                                                                                              means of a suitable press                                                                                                          Inspection                                                                                           Fil Ql WaterPumpin Section                                                                                                            Ir the water pump drive                                                                                                          shaft shows signs of wear                                                                                                          in the region of the bear                                I Body          6 Hearings     12 DistantePiece                                2 Impellcr      7 Plain Washer 13 Front Scal                           ings the shaft must be                                3 Sbaft        8 Split Pin              Retaining Plate                 renewedas a wam shaft in                                4 RcarScal     9 Slotted Nut       14 Front Scal                                SThrowcr      10 Pulley            IS Front Seal                       this region wilt allow the                                               11 Circlip                Housing                         inner race of the bearingto                                                                                                          rotate on the shaft           To Remoyeand Refit Water Pump                                       Clean impeller and check for cracks and broken             Slacken dynamo securing screws and remove                        blades           fan belt                                                                Examine casing for cracks             Removefan                                                         Washhearingsin thin lubricating oil and examine                                                                              for pitting corrosion or wear Ir necessaryrenew             Unscrew nuts securingwater pump to cylinder           block and removewater pump                                        hearings             To refit pump to cylinder block is a reversalof                  To ReAssemble Water Pump           the above procedure                                                1 Press rear hearing on to shaft fit hearing                                                                                                                      r                                                                                                                      f    Page Q2         then presson front bearing            hand to ensure that ther is no undue re        Ensure that each hearing end cover faces                istance to rotation        outwards towards the ends of the shaft                                                             8 Presson the pulley making certain that no    2 The front seal retaining plate should then he            rearward axial movemem of the shaft is               r       placed in position against the back face of              incurred       the rear hearing This retaining plate is        dished and when positioned the centre             9 The impelle should now be pressed on to the        of the plate must not be in contact with the            shaft With the impeller fitted care should                                                                                                                             rear bearing                                            be taken to ensurethat a clearanceof 015                                                               025 in 38 to 64 mm is     3 Fit the feit sealand sealhousingso that these          the inner edge of the impeller vanes and the       bear on the retaining plate                            water pump body As a guide to obtaining a    4 Prcssthe water pump thrower on to the shaft       so that the thrower Rangefaces towards the       rear bearing                                                               correct clearancein this respectthe impeller                                                               should be so positioned as to allow a straight                                                               edgeto  the back face of                                                                                                                     r    S The whole of the foregoing assemblyshould                the pump body and the two raised extractor       then be pressedinto the water pump body                  hole racesin the teat of the impeller       from the front end and the circlip securely     10 Refit plain washerand slotted nut and secure       positioned in the recessforward of the front         with a new split pin       bearing Before pressing the assemblyinto                                                                     r       the pump body however the bearings and         Modified Water Pump       the  two bearingsshould be       half filled with a high melting point grease      L4   to No 6036233                                                                                              arc fittcd    6 Fit the rear sealinto the pump body ensuring                                                        with a modificd water pump                                                                                                                     r       that the carbon face is positioned towardsthe       This latcst assembly Fig Q2 incorporates       rear ofthe pump body When fitted the seal      largcr impcller shaft bcaringsthan        must rest squarelyon its scat and not be         utiliscd and accordingJythc interior dimensions       canted in any way                               of tbc body have beenamcnded                                r    7 At this stage the shaft should be turned by           In addition the dimensioningof the latcst water                0                                                        Cl                                                                                                                                                                                   015                                                                                  1 Body                                                                                  2 Impe11cr                             I                                                    3 Shaft                                                                                  4 RcarScal                                                                                  5 Bcarings                                                                                   6                                                                                 7                                                                                        Sclf Locking Nut                                                                                        Pulley                                                                                                                     r                                                                                   8   Circlip                                                                                                                                        k 9    Distancc Piccc    0                                                                           10                                                                                11                                                                                  12                                                                                        Front ScaI Rctaining Platc                                                                                        Fro t cal Housing                                                                                        Front Scal                                                                                                                     r                                             7j                                               0                  Ql Modified                                                                               Water                                                                                  Pump                                                                                     inSection                                                                                                                                                                                                                                          T                                                                                                                     r                                                                                                                                                                                                                                          r                                                                                                                     uu   pump body and pulley result in a very limited     these components so that the                                                                                                   Page Q3                                                           A modification to the impeller shaft dispenses                                                         with the thrower flange previously fitted at the rearu   labyrinth sealing effect obtained offers increased    restriction to the passage    front bearing                             of dust to the water pump                                                         of the front seal and selflocking nut replacesthe                                                         retaining slotted nut and split pin previously fitted                                                         to retain the water pump pulleyu      Sincethe width of the pump bearingshave been         The processof dismantling and reassemblyuf    increaseda shorter distance piece is now fttted     the water pump  applicable    between the bearings and the        to the latest type pump with the exceptionof those    diameter  use of a larger front       remarks in respect of the thrower flange andu     circlip                            slotted pulley retaining nut and split pinJ I                    u                                                                                                      Page Rl      FAN          AND DYNAMOBELT      Incorrect adjustment of the fan and dynamo          the radiator The output of the dynamo would      belt can result in the fraying of the belt and even   also he reduccd      tual failure To ensure the belt is correctly      adjusted it should be checked every 50 hours                                                             Method of  AdjustmeDL      Tight adjustmentwill tend to overloadthe bearings      in the dynamoand water pump which consequently           Pressthe fan belt with the thumb at the centre      may result in damage to these components If           poiDt betwecnthe water pump and the cranksbaft      the adjustment is too slack belt slip wil occur     pulley in a sideways direction Sec Fig Rl                                                             Check the amount of movement of tbe fan belt                                                             which should he tin 1905 mm if correctly                                                             adjusted                                                             Metbod of Adjustment                                                                Unscrew the dynamo adjusting lever setscrew                                                             the setscrew securing adjusting lever to timing                                                             case and dynamo support bracket bolts Th                                                             dynamo caD then be moved inwards towards the                                                             engine to slacken the belt and in an outwards                                                            direction to ghten it When the belt is tensioned                                                             correctly tighten dynamo adjusting lever setscrew                                                             the setscrew   timing case                                                             and support bracket balts                                                               In the event of a new belt being fitted it is ad1                                                            visabie to check the adjustment again after a few                                                             hours running to ensure no initial stretching has                                                             occurred Should this have developed re    dj ust                                                             a already described                                                             DynamoBracket LOating    Screw                                                                This  adjustablewhen in position                           Fig Rl                           in the rear arm of the dynamo support bracket      This couJdresuJtin overheatingof the enginedue         and should alwaysbe tight againsttbe rear dynamo      to the reduced efficiency of the water pump and        lug before tbe support bracket nuts and bolts are      the inability of the fan to draw cool air through      tightenedIUu                       FUEL                                                                                                          Page SIu                                                                   SY STENl S      This sectionis included mainly for the benefit of  for those in outofthe way placesu     As dcscribed the maintenance and repair operations are made to appear quite simple in    reality the risk of amistake occurring which would causedamageto costly parts is such as to make it    inadvisable for any but experts to undertake the workQUi       The principal componentsof tbe equipmentfor    delivering the fuel oil to tbe  are    filters fuel lift pump fuel pump and atomisers                                                              the lift pump is removed and a blanking plate                                                              fitted in its place                                                                 The lift pump is of the simple springreturned        Tbe fuel lift pump  lifts tbe fuel from tbe        plunger type It is driven by one of the cams on   tank to tbe fuel pump which conveysit in measured    quantities and at appropriate intervals to the    atomisers        Tbe normal course of tbe fuel from the tank                                                              the camshaft of the fuel pump on the side of                                                              which it is fitted It is shown in Fig 51                                                                  A hand primer is fitted Fig 51 for use if tlle                                                              supply of fuel from the tank has at any time failed                                                              To use this primer unscrew me handle which    to the engineis by way of  first the fuellift pump    tben tbe paper element type fi1ter tbe fuel pump         is free to lift and then pump by hand until the    and the atomisers                                        pipes lift pump and fuel pump are ruIl of fuel oiJ                                                              To ensure that this is so proceed as instructed        On certain installations the fuel system is                                                              on page 56    gravity red and therefore no fuel lift pump is    fitted Tbe fi1ter system in these applications    onsists   of a water trap and a paper elementtype        Fuel Pump    filter                                                      The fuel pump is an instrument of precision        Two conditions are essentialfor efficient opera      lts working parts are made to extremelyfine limits    tion                                                     and mishandling in any shape or form or the        First that the fuel oil should he cleanfree from    entry of the smallest particle of dirt into its    watersuspended      dirt sandor other foreign matter   working parts may damage it and diminish its    and shouldconform to the following specification         accuracyof operation Hence the importance of                                                              ensuring that the fuel is thoroughly fi1leredbefore    Britisb Standard2869 1957 Class A                      the pump is reached       Second that tbe fuel reaches the fuel pump               When fitting a new or  pump    in a perfectlyclean state                                removethe pump  and pour suffi       Fuelshould he filtered  tank         cient engine oil into the spring chamber until oil       Given  ninety per cent at least        comesout of the oil overlow Refit the inspection    of potential engiDetroubles would be eliminated          cover    The attention of tbc operator is on that account            the oil level and top up with    eamestly directed towards those paragraphs of             fresh oil when necessaryevery 100 hours or as    this Manual which refer to the care and upkeep            often as is necessary to maintain the correct leve    of tbe filtering apparatus                               The outside of the pump should be cleanedbefore                                                              removing the  to ensuredirt does    The FueJLift Pump                                        not enter thc pump      The Cuelift pump is fitted in pressure red                Refer now to Fig Sll the sectional Jrawing    systemsoniy In the caseof gravity red systems           of the fuel pumpPage 52                                                                                 Fue fnection    Oil is supplied from the lift pump through the      the port When that happens communication isfuel inlet connection 25 and entirely fills the      established  betweenthe oil above the plunger andfuel pump gallery 23 That is a tubular passage       that in the gallery via la lhe vertIcal Srooverunning the fuillength of the Cue pump and closed     b the annular groove c the port in the pumpat lhe end opposite to the inlet by the vent           barrel See Fig S2plug This fuel pump gallery is           11lat is the position shown in the  ports with all the pump barrels 19             of Fig S2   In the baseof the body of the pump is a cam           Tbe Dil then ceases  to flow to the  In contact with each cam is a cam roller       is merely  thesepassages      to tbe14                                                    fuel pump gallery   The roller is held in close contact with thecam by the spring 15 The top of this tappetis in closecontact with the lower end of the pump                                                            yplunger 20 contact being maintained between                                                                    L                                                                                                             plunger and tappet by the pressureof the oU abovethe plunger   As the pump plunger falls oil fiows into the                                                                                                                      barrel through the port As the plunger rises itclosesthe port and propels the oil past the deliveryvalve 21 into the pipe leading to the atomiser   Fig S2 showshow the upper part of the pumpplunger is formed Observe that an annular                                                                     E                                                                         t                                                                         w                                                                                    J                                                                                    v                    G            AC            rgroove is cut in the plunger The lower edge of                                              p                                                                                              this groove is level or horizontal the upper edgeB is helical In addition there is avertical groovecut right to the top of the plunger and runninginto the annular groove   This groove is the meansof varying the quantity                                                                                   of Cueldelivered per stroke See below                                                                                                                               u   The first sketch in Fig S3 shows the working                                                                                                                                olend of the plunger and barrel with the fuel port                                                                               in the latter which it should be rememberedis                                                                                     in communication with the fuel gallery 23 of                                                                                                                                S                                                                                                                                 the pump Fig SlI The plunger is shown at the bottom of its stroke with the cam at its bottomdead centre                                                            IJ                                                                                            p                                                                                               x                                                                                                                                         As the camshaft turns the plunger rises but                                               nothing happensuntil the top end of the plunger                                                Qbas reached the upper edge of the port in the barrel and closes it Then the oU is propelled                                                                                               I                IJ             past the delivery valve and injection commences                                                                                                                            FIG SI       FuEL LIFT PUMP   The camshaft of the fuel pump is direct driven from the engine timing gear at half engine speed              Tbe preliminary fiJler is not always                                                                                                    supplied                        It is  timed like the magneto or distributor       B        TappetRoller              S  a petrol engineso that the closing of the port     E       FuelOutlet                T Valve Plugs                                                       F       Outlet Valve              U  commencing of fuel delivery to the engine         G       Plunger Spring                                Sealing Washen                                                       H       Inlet Valve                        V   Spring Chamber Capsthat is injection comesat a        J       Inlet                              W   Lift Pump Bodyin the compression   stroke The timing of course    L       Plunger                            X                                                          N       Guide SpindIe                               Gauze Containeris preciselythe sameCoreach cylinder                  P       Preliminary Filter                  Y   SpindIe Guide   Oil continues to fiow until the helical upper                            Gauze                  Z PrimeredgeB of the groovein the pump plunger uncovers                                                       Q       ClampingNut                        AC Inlet Plug Filter                                                       R        Firna Sm                                          G117                                                     Fue lnjection                                                                                                                               Page S3                                         The upper and helical edge of the annular                                                                     position  the vertical groove is now in line with              groovethus servesas a valve The higher that                                                                      the delivery port to the fuel pump gallery whicbu             edge is in relation to the top of the plunger the              sooner the cutoir and the less quantity of oil              supplied to the atomiser per stroke                By varying the level of that edge the quantity                                                                                                                                is thus put into communication with the top of                                                                                                                                the plunger and oil  passes                                                                                                                                It is not deliveredto the atomisers                                                                                                                                                                             down                                                                                                                                this vertical groove as the pump plunger rises                                                                                                                                   Rotation of the plunger into these different              of oil supplied is controlled        1                                                                                                                        positions is brought about in this war Near the                                                                                                                                lower end of each plunger are two lugs see Fig                To alter that level so that it uncoversthe port              in the pump barrel to vary the quantity of fuel                                                                    53 The lugs are held in a slot on the actuating              delivered the plunger is turned in its barre by a                                                                sleeve which is mounted on the outside of the              simple means to he                                                                                pump barrel and can be rotated Clampedto the                                                                                                                                 upper end of each sleeveis a toothed quadrant                 In      the    first    and        second       sketches              of     Fig           S2     the       The teeth of the quadrant are engagedby a rack              plunger          is tumed          to one         extreme           position               with         the       on the control rad Fig 511 To and fro move              vertical         groove        just     clear        of      anc     of        the        two         port        ment of the rack turns the quadrants the sleeves              holes       in    the      pump         barrel              In     that        position                the       and the plungers              helical      edge         of the       circular           groove          is at its              lowest              Between the fuel pump and the atomisers are              point       and          so   far      as     the        port       in        tbc        barrel             is   delivery valves 21 one to each pump plunger                                                                concemed                    the     maximum                     these serve the important purpose of preventing                                                                quantity          of oil is delivered                          dribble at the atomisers They do that by causing                                                                That        is the           setting           of the           a sharp cut off in the oil supply at the end of                                                                plunger            for        starting                tbc       each injection                                                                engine                                                            Fig 54 showsa delivery valve It is at one and                                                                      In    the    third           and        fourth            the sametime a poppet valve and a piston valve                                                                sketches               the        plunger               is      The head is poppet valve shapedand below that                                                                shown             set         fot            normal             is a cylindrical portion which servesas a piston                                                                running                     The              precise           valve In the lefthand sketch of Fig 54 the                                                                position                is        varied               by       valve is shown closed                                                                tuming             the            plunger              so          This valve bas a high lift so that as shown in                                                                that        a     greater               or         lesser       Fig 54 the cylindrical part of the valve risesclear                                                                quantity               of         oil         is      de       of the valve scat when the valve is fully open                                                                livered           to        conform                 with           The war in which this valve operatesto prevent                                                                the        demand             for       power                  dribble at the atomiser is as follows                                                                       The          otber                 extreme                   50 long as the fuel pump is delivering fuel oil                                                                position               of     the            plunger            the pressureof that oil on the underside of the              FIG SJ Pump element                             is   shown                   in    the    fifth                 valve keeps it wide open as in the third sketch                shown in section                               sketch This                 is the   stop                                                                                                                                 of Fig 54        J                                                                                                                  rPage S4                                                                 Fue Injection Systemcontnlld                                                       against the resistanceof the light spring shown                                                                                                              r  As soon as the helicat edge of the annulargroovc on the pump plunger uncovcrs the port           disposed within the righthand chamberin the pump barrel the pressurcof the oil belowthe dclivery valve falls and that valvc is promptly                                                          It will be  as the butterfly valve                                                       is closed the vacuum increases  and the diaphragm      rclosedby its spring As it falls the effectsof the     moves to the  of the piston part of the valvc within         The centte of the diaphragm is coupled to thetbc seat causesa drop in pressurcin the pipe totbc atomiser causing the nozzle valve to snap                                                       control rod of the fuel pump Movement of this                                                       rod towards the governor tends to reduce the                                                                                                              ron to its seat sharply cutting off tbe fuel supply                                                       supply of fuel to the atomisers as explained onso tbat there is na dribble                                                       page S3  A steelpeg is used to centralise the upper end          Thus closing the butterfly valve increasestheor the valve spring and also to reducethe capacity     vacuum in the chamber moves the diaphragmof the holder thereby improving injection control    to the light and reducesthe suppy of Cue   to the                                                       engine                                                          The butterfly valve is operated by the                                                        throttle valve levers and in that way the speed   Thc position of tbc control rack by mcans of       of the engineis  the quantity of fucl delivered to tbc engineis rcgulated as describedabove is determined by          Now here is a point of the very greatestima pneumatic governor This govemor part of            portancethich is in tbe farm of a venturi in the enginc         Any leaks in the joints of the pipe 29 in theinduction system operates the control rack            pipe itself or in the diaphragm will  to tbc degrecof vacuum in tbc vcnturi        the degree of vacuum and cause the engine topassagc                                               run raster than it should and ide erratically                                                          Hence the instructions given later urging cara  Tberc is a buttertly valve in the venturi Whenthat valve is closed or nearly closed tbe suction                                                       in ensuring that there are no air leaks in the                                                       system                                                                                                              ron tbc engine side of it is  tbc valvc is opened                                   If the pipe 29 were to become detached or                                                       be eft uncoupled and the engine run it woud  A pipe 29 connects this venturi passagcwitb        race and very smous damage be causeda governor casing which is mounted on tbc fucl                                                          Hence the warning repeated later that thepump See Fig Sll                                                       engine must never be run unless the venturi  Reference to the drawing of tbc pneumatic            control unit pipe and induction manifold are il1govemor Fig Sll will enable its operation to       position and all joints are tightbe understood  Tbc important elcmcnt is tbe tlexible  28 which divides the space insidetbc govcrnor casing into two  which that on tbe right is airtight  This airtight compartment is in  tbc venturi by means of a pipe 29 Thevacuum in tbc vcnturi is thus cmmunicated totbe airtight compartmcnt and tbc righthand sideof tbc diaphragrn                                                                                            r   Tbc chambcr to the left of the diaphragrnis not subject to vacuum                                                             closed                               open  Tbc diaphragrn thereforc is constantly subjectto a pressurc tending to move it to the right                         FIG 54 Delivery Valve                                                                                                                                                                                                                            r                                                                                                                                                                                                                                                                                                                                          r uu     Fuel lniection       Contro1lingthe Idllng Speed                                                                                                           Page S5                                                              in the fifth sketch of Fig S2 the no Cue positionu                                                              tion        An important function of this pneumatic      govemor is that of controlling the idling speed         Atomisers      of the engine                                                                Af ter leaving the fuel pump the fuel passes        Tbat is the speedat which it rotates when the         through short steel pipcs 35 to the atomisers      butterfly is in its nearly closed position That        Atomisers perform the function of injecting the      position is detennined and limited by an adjust        fue in the form of fine spraysinto the cylinders      able stop mounted on the body of the venturi           at the moment when the air in the cylinder has         With the butterfly valve control lever in this       been comprcssedand as the result of the com      limiting position the vacuum in the airtight            prcssion is at a temperature sufficient to ignite      chamber is at a maximum and the diaphragm               the incoming fuel      together with the fuel pump control rad is as            An atomiser compriscs two principal parts      far to the right as the damping spring desribed       the nozzle45 with its valve44 and the atomiser      below will allow it to go Tbe minimum quantity        body 41      of fuel just sufficient to  idle the engine is      then being delivered                                     The atomiser nozzle and nozzle valves are the                                                              important parts They are shown in Fig S8J       Vader these conditions there is a tendencyfor      the engine to  hunt that is for its speed to      fluctuate                                                                 Fuel is fed to tbc upper channel in the nozzle                                                              from the atomiser body and travels thencealong a                                                              number of drilledholcs to the lower circumfer         It is to eliminate  hunting and to ensure a       ential channel The outlet from the Iatter is      oteadyidling speedthat the  damping mechan         normally closed by the valve as shown      ism shown on the extremeright of the pneumatic            The atorniser body complete with nozzle and      govemor is provided Refer agam to FIg Sll           nozzle valve lis shown in Fig Sll The nozzle isJ       Tbe idling control spindle 33 which is under      the control of a small strong spring 32 contacts      the centre of the diaphragm when the latter is in                                                              held in place by the nozzle holder cap nut 43                                                              This holds the upper face of the nozzle in close                                                              contact with the corrcsponding lower face of the      the extremeright or  idling  position and steadies   atomiser body A metal to metal joint is made     it        Adjustment is provided for the positioo of this                                                              here                                                                Fuel is supplied thrOUgh the fue inlet con      spindie                                                nection 36 and  drilled holes                                                              down to the channel in the face of the nozzle        Screwing the adjustment in drives the spindie      further io and increasesthe idling speed                 In the centreof the atomiser body is the spindle                                                              42 surmounted by the valve spring 40 and        Adjustmeot of the idliog speed is etfectcd by         washeron the top of which bearsthe compIession      altemate manipulation of the screw 00 the end           screw38 There is a lock nut on this screw A      of the poeumatic governor and the stop foT the          coveringnut protectsthe upper part of the Itomiser      venturi lever                                          body and the         This is a very delicate operation ooly to be           The small quantity of fuel wbich bypasses      attempted by experts Tt is complcted at the            the nozzle valve and accumulatcs within thc      works for every cngine                                 atomiser body lubricatcs the mcchanism and is                                                              led away by a pipe 37 connectedto the teakalT        There is another adjustable stop 00 the venturi                                                              nippe stud At the start of injection the fue      to limit the maximum speedof the enginewhich                                                              pump delivels fue at a bigh prcssure into th      is sealed Disturbance of this seal may iovolve                                                              channe round the lower end of the nozzle Tbe      forfeiture of the manufacturers guarantee                                                              prcssureof this fue on the end surfaceof the cone        Tostop the cngine the stop lever 34 is moved        of the valve lifts it against the tension of the      clockwisc carrying the control rack with it and        spring and fuel passes through two small bocs in      tuming the pump plungcr into the position shown         the end of tbc nozzle as two fine spraysPage S6                                                                                   Fue Injection                                         CAREOF THE INJEcnON EQUIPMENTTHE FILTERS SeeSection G                                                                              Condition or suggcsted                                                                      Possible Cause     Location      rcmcdy for correct                            LIFTPUMP                                                                                     working  Tbe inlet valve of the lift pump is accessible                      f Main pipe      Main filter   Llean and vent air asafter removal of the hand primer Tbe outlet                              line filter                   i nstrUcted In this page                                                                           is under the plug T Fig SI Theevalves                      a Air locked     Main filter   Vent air by openingand their seatsmust he perfectly clean                                   system                       vent screw on main                                                                                                        filter and allowing fue  Tbe following are  with the lift                                                      0 flow until perfectly                                                                                                        free from bubblcs Seepump and the way in which they can he remedied                                                         below                                                                                                                                     r1 Lift Pump does not dever FueL                                     Air Venting the Foei System                                         Condition    or suggestcd       If tbe fuel systembas been openedat any timePossiblc Causc         location          rcmedy      for    correct                                                  working             sar for au overhaul it is necessary                                                                                                         to ensurethat               a Fuel tank          Fuel tank        Must contain      an ade                                                                      all air bas been removed before attempting to    empty                               quate supply                start the engine This should he done as follows b Fuel cock      Fuel cock          Must be open to iu    closed                           ruIl extentc Preliminary    Preliminary filter Remove by loosening             PressureFed Systems    filter choked gauze P           round nut Q and lift                                      ing fixing strap R               Slacken small plug on the top of final filter                                      Wash in clean fuel                                      lil or paraffin     Ir        and operate the hand primer on the fuel lift                                      damaged replace               pump until Cuefree from air                                                         fake care to repJace                                      washer S                       the plug hole Tighten the plugd Inlet or       Valves F  H     Remove by unscrewing    outlet valve                     hexagon plug T and               Slackentbe bleed cock on the top of the fuel    fouJed or                         primer Z Clean in    damaged                          fuel oil or paraffin           pump                                      Take care to screw                                      plug Tand primer Z              Again operate the hand primer on the fuel lift                                      in to the full etent           pump unti fuel issuesfrom the bleed cock and all                                      when replacinge Plunger or     Plunger L and      Etract after unscrew         signs of air have disappeared    tappet spin   tappet spindIe     jng cap V Oean in    dIe fouled     N                 fuel oil or paraffin             Tighten the beed cock securely and give the                 r         or damaged                                                  primer a few more strokes in order to deliver tbe                            NOTE        If damaged return                                         complete with body to        Cuethrougb the relief valve on tbe final filter                                         nearest     authorised       clearing this part of thc systcm of air                                         agent                                                                                      r2       Lt Pump does oot dever Sufficient Fuel                    Gravity Fed Systems                                        Condition   or suggested                                                                         Slacken small plug on the top of the final filterPossible Cause         Location          remedy      for   correct                                                                      and turn on fuel tank supply tap until fuel free                                                                 working                                                                      from air bubbles issues from the plug holea Connection         Connection pipe Sec that aJI joints and       Tighten the plug    or pipes beo                        pipes are perfectly air    tween the                           tight    lift pump                                                           Slacken the bleed cock on the top of the fuel                r    and Cuel                                                          pump and allow fuel to run until no trace of air    pump teak    ing                                                              remainsb nIet or out      Yalves F  H    rreat as for      d    Iet valves                                                           Tighten the bleed cock securely whilst fuel is    leaking                                                          still issuingc Plunger            Plunger L        Treat as ror 1 0    leakingd Plunger            Plunger           Replace    spring             spring G                                                        ENGINE TROUBLES    darnagede Preliminary        Preliminary       Treat as for 1 c             Fuel injection difficulties can arise on the engine             filter ob         filter    trnd            Gg1l7 P                                       from severalcauses    some of which mav he traced                      Iel Injecton                                                                                             Pag 57           to the Cuet pump Such difficulties with the                      2 Enginedoesnot pull           likely causeand suggested   cure are set out on the           following tabie The fust move when a Cuel     pump           is  be to uncouple the piping           betweenthe fuel pump and the atomisers If the                     Quantity of       a Delivery                                                                              fuel delivered        valve 21           engineis then rotated with the pump control rod                    per stroke           set at ruil load position it will be seen whether                  insufficient                                                                                                b Pressure             Ir leaking clean joint           or not the Cuelis being delivered Observeeach                                          system     joints   racesand tighten           discharge outlet on the fuel pump to see if all            are in order On the following                    3 Engine emits black smoke           table the word  pump  applies to the pump unit                                                             Condition   or sugaested           block as a whole or to individual elementsand                     Possible Cause     Location              remedy for correct                                                                                                                               working           the numbers reCerred10 are shown in Fig Sll                                                                              Quantity of       Ca Regulating           Ir moved duo to scrow                                                                              Cuedelivered         quadrant 24        being 10050proceed as                                                                           per stroke                                 in r                                                                              excessive           1 Engine will not Start or Stops after a short               time                                                   Condition or suggcsted           Poiblc Causc      Location           remedy for correct                                                          working            Control rad  a Pump          Proceedasin r                                                                              hasjammcd       plunger20           Pump does not a Fuel cock            Must be open                           b Control rod   Proceedasin r           deliver fuel                                                                              NOTE  Ir air is in system the suction side of lift                         b Fuel tank            Must contain an ade                                                   quate supply                     pump should fust be examined                            c Fuel inlet pipe                                 or filter                                 elements                                                   Clean pipes examine                                                   filter elements and if                                                   choked clean them as                                                   descnbed in Section G                                                                                      PNEUMAnc GOVERNOR                                                                                Adjustment of tbe pneumatic govemor is                             d Air in pump      Air vent filter and                                                   pump as described     on   etfected at the works when the engineis erected                                                   page 56                   It is an operation requiring considerable skill                         e Delivery          Clean and inspect Ir      Tbe idling stop on the buttertly valve and tbe                                 Valve21         worn or damaged re                                                   place both   valve   and   adjusting screw on the cap of the govemor have                                                   seating                   to be manipulated altematively until smooth                            f Pump                                 plunger20                                                   Return the pump in                                                   tact to the nearest                                                   service station or to                                                                              running at the desired idling speed is achieved                                                                                No  is in fact needed                                                   Perkins Engines ltd                                                                              Any deterioration in the smoothnessof idling is           Pump does         g Air in pump      Air vent filter and          not deliver           fuel uniformly                             h Delivery valve                                 spring 22                                                   pump as described on                                                   page 56                                                    Replace if broken                                                                              due to some defect which bas arisen elsewhele                                                                              and should he looked for under the paragraphs                                                                              in tbis section devoted to care of tbe fuel system                             j Delivery          If damaged on face or      generally                                 valve            guide replace                             k Tappet            See f above1                                spring 1S                                                        MAINTENANCE                             1 Pump              5ee f above               Tbe tmiest pinhole or crack in the leather                                 plunger 20                                                                              diaphragm will affect the operation of the gover                             m Fuel inlet        Proceed as c                              pipes or filter                              nor If such a ault is suspected                                                                                                               test in this way                                 elements                                                                                a Remove vacum pipe                             n Fuellift          This pump may not he                                 pump             operating  efficiently                                                                                b Move the stop lever into  stop position                                                   See instructions      on                                                   page 56                      c Place a finger over the diaphragm housing                             0 Tappet ad        Proceedas in f above            union in order to seal it                                 justing scrcw                             p Cam profiles      Proceed as in f above       d Releasethe stop leverIJJ                                                                                                                       Page S8                                                                  Fue Injection                                                                                                                                                                                                                                       r                                                                                                                   F                                                                                                                   r                                                                                                                   r                                                                                                                                                  FIG SS Removing diaphragm from pneumatic govemor                                                                                                                         e Tbe control rod should then slowly return           For preference usea picce of sheetmetal about          to the maximum speed position after a            tin 190 mm wide shaped at tbc end to fit          quick initial movement for a fraction of         the curve of the rim and sharpened to an edge          the distance Ir it returns quickly for the      similar to that of a screwdriver          whole movement and the housings are                                                                                                                   r                                                              Lift the edgc of tbc rim carefully at round          clampedfirmly togetherthen the diaphragm          is leaking and should be replaced by an            When tbc rim is frec slide tbc socket at tbe                                                           back of tbc diaphragm off tbc pin in tbc control          authorised agent Instructions for replace          ment are given below                            rod                                                    r      If the diaphragm appearsto be sound as indi           Be careful not to mark tbc face of tbc fuel    cated by this test suspectthe vacuum pipe and         pump on to which the governor casing fits    test in a similar way Replacethe union of this          To rcplace tbc diaphragm first place the socket                                                                                                                       pipe on the governor casing and uncouple it at         on tbc pin in tbc control rod    the butterfly end Repeat the test as before but                                                             Then prcssthe rim tirmJy in its place    placing the finger on the uncovered end of the    vacuum pipe                                             Replacc the governor casing being careful to                                                                    screw the setscrewsvery tightly and evenly in                                                           position    To Renew Leather Diaphragm      To renew the Ieather diaphragm proceed as                                                                        follows                                               CAunON       Disconnectthe vacuum pipe                             Tbe pneumatic governor depndstor its action      Take out the screws holding the pneuma       tic     upon  set up in the air intake                                                           pipe of the engine by the venturi control valve            governor in place                                                           If this should be removed either by itself or with      Tbe diaphragm will then he accessible lt is         the inlet manifold during overhaul or it the vaCUUJT    held in a light Usection meml riJn which must be    prised from the cas ing Sec Fig S5                                                           pipe unions are not always kept perrectly tight                                                           then the governor may rail to operate causing                  Great care must be exercisedin this operation      damage to the engine                                                                                                                                                                                                                                                                                                                                                                                                                                                                                t             Fuel Injection Systemcominued                                                                   Page           IN NO CIRCUMSTANCES SHOULD THE                        Examine the brass nippies which wlll be found         ENGINE BE RUN WITHOUT VENTURI                         on each end of thesepipes         CONTROL UNIT VACUUM     PIPE OR                         If the union nuts have at any time been over    1    rNLET MANJFOLD                                       tightened there is a risk that the nippies will have                                                               cracked or been unduly compressed If 50         Atomisers                                            leakage will result         Each atomiser body consists of a steel body         held to the cylinder head by means of a flange           In this connectionbear in mind that the working                                                               pressurewhich thesejoints must sustain is several         and two studs                                                               thousand pounds per sq in Only a perfect           Tbe joint between the atomiser and cylinder         joint is satisfactory         head is made by a specialcopper washerbetween         the lower face of the nozzlecap nut and the metal       It is quite easyto          of the cylinder                                         Clean up a length of pipe near the end using a                                                               fine cut file for the purpose until the nipple wil           When preparing to fit the atomiser into place         in the cylinder head care should be taken that       slide on tI it         only this special type of copper washer is used         Remove tbe nipple and replace the union nut         to make this joint The metal of the cylinder         and steel washer The Iatter must have its coun         head the facesof the copper joint ring and the      tersunk face towards the nipple          on the nozzle holder cap nut         should be perfectly clean if a leakproof joint is      Now press the nipple on to the pipe leaving         to resut                                            164 in 40 mm of the Iatter protruding           It is advisableto fit a ncw joint washer when         Hold the pipe in tbe vice 50 that the niiPle         the atomiseris replacedafter having beenremoved       rests on the washer and the washer rests on the         for any reason                                       top of the vice                                                                 Rivet the protruding portion of the pipe over    1      Ensure that the old washer has been removed         from atomiseror cylinder head                        the nipple                                                                Take care that the hole in the pipe is not closed           This joint washer should be an easy but not         loosefit for the atomiser nozzle and it is because   whilst rivetting    1    this is such an important feature that the washers         especiallymade for the purpose should be used                                                                 Clean off witb a fine cut file         and none other On no account should ordinary            When refitting take care that it is the brass         sparking plug type was hers be used                  nipple which makes the joint and not the actual                                                               riveted portion of the pipe            The atomiser can now be fitted in place care         being taken to sec that it is an easy fit in the        Af ter fitting ncw nippies WASH THE FUELu        cylinder head and on the holdingdown studs         so that it can be placed down on the copper         joint without force of any kind The nuts on the         flange should then be tightened down evenly in         order to prevent the atomiser nozzle being canted                                                               PIPE WITH CLEAN FUEL OIL using either                                                               the atomiser testing pump or the engine fuel                                                               pump thus removing any filings which may be                                                               in the pipe                                                                 Offer up the pipe to the delivery valve and         and so  nipped in the cylinderhead This is                                                               atomiser unions to check that the pipe fits square         very important sinceany unevenness in tightening     at both ends Do not fit one and then bend the         down may  of the atomisernozzle                                                               pipe to square it with the other union         resulting in its failure and will most certainly         result in blowby                                      When fitting tbe pipe tighten the unions alter                                                               nately a little at a time first one end and then the         Foei Pipes                                                               other           No two of the pressurepipes from fuel pump         to atomisersare alike Keep this in mind when          If the nippIes have been properly fitted and the         replacing                                            pipe is squareto the unionsat eachend asdescribed    J                                                                                                               I                                                                                                                                       Fuel  SlO                                                                                                               rpreviouslyno force wiil be neededto makea goodjoint No force should be used                             Use only a standard openendedi in by 1in                                                                rspanner   If the union is tightened excessively                                       the nipplemay collapse and split Tbe same danser exists                                                                 rif the pipe is not square to and central with theunion  When changing an atomiser always remove the                                                                  rpipe entircly Never undo only ODeend leavingthe other tight Never bqid the pipe                                                       FIG 56 5howing plalc Cor holding Atorniscr whilc                                                                       is bcinl disrnantlcd                                                                                                               r                MAINTEN AN CE   Atomisers should he taken out for examination         Often tbe pamcular atomiser or atomisersat regular intervals How long this interval should    causing trouble maf he determined by releasingbe is difficult to advise becauseof the widely                                                                                                               r                                                       thc pipe union nut on each atomiser in turn withdifferent conditions under which enginesopera    te   the enginerunning at a fast  tickover This willWhen combustion conditions in the engine are           prevent fuel heing pumped through the nozzlegood and the fuel tank and filtering system are        to the enginecylinder thereby altering the  fust classorder it is often sufficient   revolutions If after slackeninga pipe union nutif the atornisersare tested twicc yearly              tbe cngine revolutions remain constant this   For detailed times refer to periodical mainten     denotesa faulty atomiseriince Section F It is no use taking atomisers                                                         Tbe nuts from the flangcofthe doubtful atomiscrout for attention ess the equipment described                                                       should bc rcmovcd and tbc complete unit witbon page Sll is available or spare atomisersare                                                       drawn from tbc cylinder head and tumcd roundat hand for substitution                              atomiscr nozzle outwards  unwipcd on its              The nearer thc ideal conditions of good fitting      pipc and tbc unions retightcacd After slackenwith adequate cooling and absolutely clean fuel        ing tbc unions of tbc other atomiscr pipes toarc realised the less attention the atomiscrs will    avoid the possibility of tbc enginc starting thenced and so the langer their efficient life In       enginc should bc tumcd until tbc nozzlc spraysthis conncction sinco there is no other item of       into tbc rir whcn it wiJl bc sccnat onceif tbc spraytbc equipment upon which thc performance of            is in order If tbc spray is unduly  wct or                                                        streaky or obviouslyto anc sideor tbc atomiscran engine depends so much it pays the uscr                                                       nozzlc  dribbles tbe spray holes should behandsomely to sec that the engine never runswith anv of its atomisersout of order                 probcd with the specialtooi ET120SeefIg S9                                                       Ir aftcr probing tbc spray holes tbc condition of                                                       tbc atomiser is still faulty removc tbc  in Semce                                     unit  The first symptomsof  usuallyrail in ODeor more of the following headings            Great care shoud be taken to prevent the hand                                                       from setting into contact with the spray as the   I   Knocking in one or more cylinders           working pressurewil cause oil to penetrate the  2 Engine overheating                               skin with case  3 Loss of power                                       Tbc spare atomiser from the tooi kit should be                                                       tltted the faulty unit being placed in the tooi kit  4 Smoky exhaust black                                                       securely wrapped in ciean  or  5 Increased fuel consumption                       rag for attention on the maintnanc    Inch                                                                   Fue lnjection                                                                               Page SII                                                                       The only exception is in the case of atomisers                                                                    fttted to L4  in Marshall Crawler                           tv                                     Tractors where the setting is 160 atmospheres                      rJJft                            i                                                                       Atomisers set at 120  white                                                                    painted capsand the caps of atomisers set at 160                                                                    atmospheres    are painted silveru                               lI                                                                       An altemative means of identiftcation is a tab                                                                    washer fttted under the atomiser cap nut bearing                                                                    the letter  J  for 120 atmospheres                                                                     V  for 160 atmospheres                                                                                                          or the letter                                                                       L4 atomisers supplied under the Perpetuity                                  9Jf                           Schemehave green painted caps with white Ol              c                                            silver on the top or a tab washerunder the atomiser                                                                    cap nut signifying the setting and typeu                                           k               FIG 57                                                                        The spray should now be observed for uni                                                                    formity at a rate of pumping of not less than                                                                    20 strokes per minuteu                                                                       Each should be a misty spray spreadingto about     ExaminadoD     and TestiDg                                    3 inches75 mIn diameter at about one root away        A bench suitable for working with atomisersis               from tbc atomiser nozzle then breaking into a     preferably  with glass 00 top                 vcry Me mist There should be two spraysfromu     It should he enrely reservedfor this work and                 cach atomiser nozzle one pointing outwards from     kept absolutelyfree from din The use of cotton                the top hole and the other pointing downwards     wasteor fluffy rags must be absolutely forbidden              from the lower hole when the atomiser is in a        The bench should have a dust proof drawer                   position correspunding to its working positionu    for holding the atomiser cleaningtools and equip                 An atomiseris good for service if whenoperating     ment describedin detail below                                 tbc atomiser testing pump at the abovc speedit                                                                    gives two etfectivc sprays as above described        A plate made up as shown in Fig 56 should                  An atomiser is dirty and requircs recondition     he secured  to the bench lts purposeis to hold theu                                                                    ing if a when proccedingas abovc it throws out     atomiser securely whilst various maintenance                   solid wet jets and not braken up spray or b     operaons are proceeding                                      if eithcr of the holesare chokedor partially choked        An  No ET122AFig 57                so that spray issues from one hole in theu     should he available This outfit bas beenspecially             atomiscr only or appreciably more spray issues     designed to provide a reliable means of tesng                 from one hole than the othcr     and setting the atomisers It is made up of parts                 In this connection as tbc Perkins enginc idles     similar to the injection  to engilles          at about 500 rpm the atolniser is never calledu        The doubtfuI atomiser should     be removed from its wrappings                                        A     and fitted                I                                                                                still unwiped0 the testing pump                                    I                                             No observaons should be     madeuntil at leastten fuil strokes                                             l                                                                    I                                                    of the hand pump havebeengiven     to expel all air from the system     Atomiser Pressures                                                                                                           r                                                                                                              ti                                                                                                                                                                                                                                                                                                                                                              ca                                                                                                                          r       The pressureat which the spray     breaks should then be recorded                                                                           I                                                                            0                                                                                   v     and checked against the recom          rCMISD   NOULI              TOMIS                                                                                00 asu Acr          NO   VALV     mended pressure which is 120                                             FIG S8 Diagrams of Atomiser and Atomiser              Body   the letters have     atmospheres                                                   referencc in the lext J J JPage 512                                                                     Fuelnjection                                                                                                                   rupon to walk in the engine more slowly than 250            the atomiser nozzle should he cLeanand bnght                                                           free from  undersurface    C injectionsper minute Thus by taking the atomiser                                                           of the flange the face of the atomiser body D spray at 20 strokes per minute ample margin isallowed                                                   4nd the interior retaining shoulder of the nozzle      r   When removing an atomiser from the testing              holder cap nut All of thesemust  close valve by rotating he handwheeland             absolutely cLeanlyand squarely to fonn the highscrew olf the union nut a little at a time so that         pressure joint between the atomiser body and                                                                                                                  the pressure raIls gradually                              nozzle   Atomisers are set to operate at th pressures              The atomiser body should now he    previously  works If a        from the plate and together with the cap nutncw atomiser nozzle is fitted to an atomiser body          immersedin clean paraffin and left to soak in a                                                           suitable container The nozzle valve should be                                                                                                                  it is necessaryto reset the pressure After theatomiser bas been in service fOT same time the            grasped by the stalk between finger and thumbopening pressuretends to raIl but provided that           and withdrawn carefully for examination Thethe atomiser nozzle holes do not choke up there           stem of the nozzle valve should be clean and                                                           bright and free from high spots bad scratches                                                                                                                  ris no need to adjust the pressure   NO ATTEMPT SHOULD BE MADE TO                            or dull patches and the grooves free from dirtADJUST THE              INJECTION          PRESSURE        meta particles or other foreign matterWITHOUT A PROPER TESTING PUMP                                 The stem and the valve scat of the nozzl           rAND PRESSURE GAUGE AS DESCRIBED                            valve should now be examined and if dirty orAND         ILLUSTRATED            IT    IS QUITE          coked cleaned until bright metal is  TO ADJUST THE SETTINGOF ATOMISERS WITH ANY DEGREE OF                             WITHOUT PROPER EQUIP                               Assumingthat the nozzlevalve bas beensoaking                                                           and the two surfaces A and  B on the topMENT   If the atomisers are interfered with on the            of the atomiser nozzle flange already  that so maar turns of the adjusting             are clean and free from damagethe inside of thescrew representsso maar pounds they may vary              atomiser nozzle should he examinedThe kit ofasmuch             oae and another    tools shownin Figs S9and SlO are recomrnended                                                           The three small drilled passages  G Fig S8With       engine                                                           should be explored to seethat they are clear and       rcannot possibly give of its best   If the spray is still  after         clean followed by an examination of the valve brushing the carbon away from around the                 stem bore in which the nozzle valve slides This atomiser nozzlewith the fine wire brush specially        surface should be clean and bright and free fromdesigned   for the purposeand illustrated in Fig S9     high spots or scratches or dull patches The                                                           valve seating  1 Fig S8 should now come the atomiser should be placed on the atomiser holding plate already described see Fig S6            under observation under a strong light to ascer   Before attempting to dismantle the atomiser            tain whether or not it is free from dirt or carbon                                                           If this is not so and indeed in any case it is      r the tension on the spring should be releasedby unscrewing   the compression     screw38 The nozzle      advisablc to usc tbc soft brass scat scraper No holder cap nut 43 Fig Sll should be slackened        ETO70 scc Fig S9 to remove any carbon or with the special ring spanner provided ETll6             particles that may he imprisoned on the scat seeFig SIO To hold the nozzle holder cap nut         The gallery  H Fig S8shouldncw be cleancd in the vice or to use illfitting  packed or adjus   with tbc ajd of the special soft brass scraper Notable spannersor wrenchesis to invite disaster            ETO71sec Fig S9 to ensurethat it is also clean   Examine the pressureface of the nozzle holder           and frec from dirt or carbon                          cap nut to see it is not damagedso as to have                The spray holes in tbc atomiser nozzle endc nipped the atomiser nozzle in any way                 should he probed with thc specialtooi ET120see   The nozzle holder cap nut should aow be                 Fig S9removedand the atomisernozzle completely lifted              In caseswhere the holes cannot be cleaned byfrom the atomiser body fOT examination The                this process the complete atomiscr should besurf acesccA and  B  in Fig S8 on the top of        rctumed  packedas described                                                                                                                   L     Fueinjection                                                                                                      Page SI3       COMPLETEKIT                                                        taken to ensure that the highly ground                                                                          face  D  Fig S8 is clean and free         ET 141                                                                          from scratches This face must register                                                                          with the atomiser nozzle flange cleanly                                                                         and squarelyto forn1a                                                                                                                                   and must therefore he handled in such                                                                          a war as to avoid damageto the surface                   l1I1                                             The exterior of the atomiser body of                                                                                             courseshould be  from       Jf                                                                dirt and grease in the usual manner 1                                                             ff       Periodically                                                                          the        interior                                                                                                it                                                                                                     of                                                                                                          is    advisable                                                                                                               the      atomiser                                                                                                                                   to   dismantie                                                                                                                                         body       tou                                                                 1       examine the springs40 Fig S11spring                                                                          plate and nozzle spindie 42 Wben                                                                      dismantling the special spanners Nos                                                                          ETl17 and ETl18 sec Fig SlO shouldu                                                                          be applied for the removal of the nozzle                                                                      J   bolder spring cap 39 Fig SII which                                                                          is revealed after the removal of the          gj l l ETI20 I I                                              ET124I        ET138                                                                          covering protection cap The interior of           I                                                                          the atomiser body and the palts removed         ET068       ETO71       11069       ET072                    should he washed carefully to remove J          FIG S9 Complete Kit of TooI for use when cleanin                          and overhauling atomisers     above Assuming that the spray holes have been                                                                          any dirt or moisture If the spring                                                                          and the parts are in good condition                                                                           they should be reassem     bied carefully     cleaned satisfactorily the atomiser nozzle caD            aud perferably after having been slightly coated     then he placedin the container to soak in paraffio          with lubricating oil     or preferably assembiedin the atomiser flushing     tooi No ET427 Fig SlOand thoroughly flushed                The serviceable  life of the atomiser valve spring     through to ensure that all carbon particles are            can be        by careful treatment     removed trom the inside of the atomiser nozzle             and  be taken to avoid the damage        Tbe nozzle valve should now he polished by               likely to be causedby moisture corrosion arising     rubbing with an absolutely clean clotha piece              in  or by reasonof condensation J   of used boiled cotton is bestupon which there     is no suggestion of fluff Particular attention should     he given to the valve seato This and the smaller                                                                 owing to temperature changes in service It is                                                                  these valve springs should beu      above it called the  stem          inspected cleaned and greased whenever the     and  cone in Fig S8 can he cleaned with the            atomisers   are removed for cleaning whilst care                                                                 should be taken in storing sparesto preclude alf     fine brass wire brush Toensure that the stem               possibility of the access   of moisture     and coneare free from any particlesthe soft brass     stem cleaner No ETOn should be applied with     a rotary action pressingthe nozzle valve into the          ReAssembly    of Atomisers     cleaning tooi with the fingers                                Tbe atomiserbody and  now        Af ter ensuringthat the exterior of the atomiseru                                                                 be assembIed   carefully after having immersedthe     nozzle is clean and free from carbon the valve              each in clean fuel oil to ensure     and atomiser nozzle may be assem         bied together     that they are free from dirt Tbe nozzleholder cap     This should be after the two parts have been                nut 43 should be crewedon to the body by     thoroughly washed in clean paraffin or fuel oil             use of the special spanner Excessive       tighteningu    and placed together preferably with the tingers     whilst submergedin the clean oil        Tbe atomiserbody shouldnow receive        attention     it should be washedin clean paraffin care bein                                                                 of the nozzle holder cap nut may result in con                                                                 striction or distortion of the atomiser nozzle and                                                                 its   care should be exercised                                                                 to ensurethat the leveraee   aDDliedis not cxcessivePage 514                                                                                        Fuelnjection Systemconnnuea                                                                                                                                            r   Af ter cleaning the atomiser shoud he testedalwayson the atomiser testing pump as previously                                                                                                                                                     The rnodified atomiser is                                                                                                                                             rdescribed If the pressure at hich the spray                         the previous type providing a new type  not that quoted above it can he adjusted                      teakoIrpipe is fitted To ensure this new typeby the spring adjusting screw and lock nut usingspanner ET119 Fig SlO                                                                       teakoIr pips are autornatically supplied with all                                                                       Sparesand  the modi                                                                                                                                            r   A perfect atomiser when tested by pumping                          fied type Previoustype  through it in the open air gives a short pinging sound as the fuel emergesfrom theholes no matter how slowly tbe fuel be pumped                                                                       re lS0supplied with the previous type auxiliary                                                                       teakoIrpipes in order to effect                                                                        with engines incorporating the later type atornisers                                                                                                                                            rAfter tbe atomiser has been in service for sometime the  pinging changes to a cracklingsound It is not until tbe atomisersounds deadthat its condition is likely to affect tbe running ofthe engine  When replacing tbe atomiser in the cylinderhead follow carefully tbe instructions for fittinggiven on page S9                                                                                 WASHERS                                 LOCKNUT MODIFlED ATOERS                                                                                                        ADJUSTING    As from EngineNo 6012782    a modified atomiser                                                                     SCREW                                                                                 SHIMWASHER                                                                                                      was introduced on L4 engines the two main differences from the previous type being the aux iliary leakoff pipe connectionand the  screwseeFig 512    The auxiliary leakoff pipe connectionis now on                                                                           NOZZLE the side of the atomiser body fixing fiangewhereas previously it was situatedjust abovethe inlet pipe union nut This of     a new type                                                                                                                             SPINOLE                                                                                                                                        r                                                                                 INLETauxiliary leakoff pipe  The atomiser adjusting screw now screwsdirectly into the atomiser body and also comprisesthe atomiser valve spring cap                                                                                                                                        r                                  o                                                    ET 6                                 e                                     5                                     rCfff1                                                                                                             4                                                                                                                            FJL1                                                                                                                    NOZZLE                                                                                                                  CAP   NUT                                                                                                                             HOLDER                                                                                                                                        r   0                     Er    2                            f   Q                             L                                 E T  S                                                        lYfi                                                                       F                                                                       I1                                                                        1                                                                                                                                                                                                             NOZZLE                                                                                                                             YALYE                                                                                                                                        r                                                                                                                                                                                                                 i   0 lA                                                                                                                                                                                                              r                                      eT7                             tf                                                   NOZZLE                                                                       E T 137                                                                        E T 427                                                                                                                                        rFig SlO Spanners and clcaning tools ror 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                                                                                                                                                                                                                                                                                                                     I                                                                                                                                                                                                          wg                                                          tn                                                                                                           0                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 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                           CT       Certain L4 engines are equippedwith a mechani     cal governor in place of the pneumatic governor     This governoris set and adjustedbefore the engine     leaves the factory and no further adjustment     shouid be necessary       Any settings and adjustments which may be     necessaryas when the engine has undergone a     major overhaulor the fuel pump hasbeenremoved     should only be carried out by trained personnel     Instrucons tor  Governor        To carry out the  it will be     necessaryto remove the cover situated at the     front of the govemor and the govemor housing     rear cover1   Preliminary Settings        1 Ensure that the governor weights move                                 FIG T2     freely when operated with the finger If they are    stiff it is probably due to distortion set up in the     weight carrier when holding screwsare tightened                                                            reached unscrew adjusting screw oDe turn The                                                            idling spring control screw is situated at the rear     To correct this it will be necessaryto remove          of the fuel pump See Fig T 3     carrier plate and seetbat tbe rear face is clean and     3 Reducetension on mainspring with control     free from dirt Seealso that tbe front of the fuel     lever in ruil speed position     pump gear is clean and free from dirt                                                              4 Set  anchorageto innermost       2 Hold the stop controllever on the fuel pump       position R Min See Fig Tl     in the stop position and screwin tbe idling spring     control screw until the spring is coil bound ie      5 Place govemor lever in the idle position     until adjustmentof the screwjust begins to move        presstoes of forked lever on to sleevetbrust race     tbc stop control lever Wben this position is          and adjust fuel pump actuating lever until this is                                                            clear of fuel pump push rad by t in 159 mm                                                            when fuel pump control rad is at maximum fuel                                                            position See Fig T2                                                              Allen key 532in across flats is required to                                                            unlock and lock fuel pump actuating leverJ                                                             Seethat by moving the weightsto the outermost                                                            position the fuel purup control rad moves to the                                                            point of no fuel within t in 159 mm of total                                                            control rad movement                                                            Test Bed Procedure                                                              A Start engineand warm up to 160F71C                                                            water and oil                                                              B Set engineto rated load and speed lt win                           FIG T                           he necessaryto increasethe main spring tensionJJJPage T2                                                                    echanica                                                            WARNING In no  any                                                        attempt be made to increaseidling speedwith the                                                        idling spring control screw                     i                                   E Finally recheck governing from ruIl load                          SCREWIDLING CON TROL                                                         half load to no load to ensure                                FUEL PUMP             the governor is stabIe throughout its range                                                        Field Procedure                                                          Tbe preliminary settingsare as already described                                                        and should be carried out then proceedas follows                                                          1 Start engineand warm up to 160cF71cC                                                          2 Set lever to running position and check                                                        maximum no laad rpm Such inertia laad as is                                                                             available should then be applied and removed in                                                        rapid successionto check the stability of the                                                        governor Any  should be                                                        made as described in Test Bed Procedure para                      FIG T3                           graph C                                                          3 Carry out operation D in Test Bed Procedureuntil full laad caDjust be obtained at tbe appro         4 Finally recheck maximum no laad r pmpriate speed Main spring tension adjustment is         and idling rpmcarried out by alteration of the govemor springcontrol lever adjusting screw See Fig T4   C  note  speed If this is  load andtry a sudden removal to check stability of thegovemor  Greater stability may be obtained by increasingtbc  R of tbe spring lever by rotatingthc spring anchorage Eccentric adjustment between R Min and R Max being obtainable seeFig T1   D Having obtained  setlever to idling position and check light load idlingspeed Adjust as necessaryon the idling stopscrew Fig T4 Ir it is not possible to reduceidling speedto tbe required rpm by adjustmentof tbe idling stop screw it wil be  reduce the load in tbe idling spring  This cao be obtained by screwing out tbe fuelpump idling spring control screw at tbe TeaTofthe fuel pump SeeFig T3                                                                                                                                                   Pae U             FLYWHEEL ANDu                         Ij                                                                                                ensurethat the mating facesof the cylinder block                                                                                               or back plate when fitted and housing are per                                                                                               fectly clean and free from bumu                                                                                                                                                                                                                       Put the housing on to the studs replace spring                                                                                               washers and nuts Tighten nuts evenly do not                                                                                               overtighten so as to allow adjustmentu                                                                                              Alignment of Flywheel Housing Bore                                                                                             of Secure the base of an indicator stand to the fiange                                                                                                  the crankshaft                                                             A                                                              Ir                               Set the needIeof the gaugeto the interior of the                                                                                               bored hole in the fiywheel housing See fig UI                        Ic                                          r                 i     Turn tilt crankshaft and check that this hole is                                                                                                            ntral The housing is adjusted until the bored                                                                                               hole is central with the crankshaft within the                                                                                               following limits total                                                                                                                                                   Diameter  of Houslng                                                                                                                    Bore x Allowance     TIR                                                                                                      Up to 141 in               0006in                                                                                                                                                                              362mrn                 015mm                                                                    7                            141to 2Ot in               0008in                                                         fr                                   362 to 511 mm               020mm                              I                                                                                                      2Ot to 251 in                0010in                                            ra                                                      511 to 648 mm               025mm                                                         Fis UI                                                                251 to 31 in                0012in                                                                                                    648 to 787 mm               030mm            It is most important tbat tbe flywbeel bousing                                     Alignment of Flywheel Housing Face         he correctly aligned witb tbe cranksbaft tberefore                                      With the base of the indicator standstill secured         if a bousing bas been removed tbe greatestcare                                                          f1i         must be taken on replacementto ensureaccuracy         of alignment            For conveniencein turning tbe engine it is         advisable to release but not remove tbe nuts         holding tbe atomisersin place when carrying out         alignment of flywheel and flywheel housing         To RemofeFlywheel            Remove the locking wire from the set screws1       which securetbe flywheelto the crankshaft flange            Turn the engineto bring oae setscrew            Removetros setscrew                                                to tbe top                                  and screwin a stud in its                                                                                       j                                                                                                                                                            place as a temporary measure to prevent the       tlywheel from dropping            Remove remainder of setscrews            Remove flywheel         To RemofeFlywheel Hoing            Removeflywheel            Removal of Duts and spring washersfrom the         studs securingtbe flywheel housing to the cylinder         block or back plate if fitted win enable the         flywheel housing to be removed         To Refit Flywheel Housing                                                                                                    Before fitting or refitting flywheel housing                                                              FigU2faze U2                                                       FlywheeJand Flywheel  tbe cranksbaft flange adjust to set tbe needIeof tbe indicator against tbe vertical machinedface on the flywhee1   housingSeefig U2   Turn cranksbaftand checkthat this faceis at rightanglesto tbe cranksbaft axis This facing must bewithin tbe following limits tota1indicator readingofbeing at truc right anglesto tbecranksbaft    Bore MaxAllowance     TIR       Up to 141 in                 0006 in         362mm                  015mm       141 to 2Ot in               0008 in     362 to 511 mm              020 mm       2Ot to 25t in               0010 in     511 to 648 mm              025 mm        25t to 31 in                0012 in     648 to 787 mm              030 mm    AU adjustments to bring tbe  within tbe limits specifiedmust be on tbe flywhee1 housing and under NO CONOmONS must tbe rear of tbe cylinder b1ock or adaptor plate be interfered witb    When tbe housing is aligned to tbe above limits                             Fig U4 tighten the securing Guts evenly                      order to wnen removing but the following must    Ream tbe two dowe1holes and fit the correct         also be carried out length and size of dowe1s                                 Secthat the flywhecl face and crankshaft flange To Reit Flywheel                                      are perfectly clean and free from burrs before    The  rep1aced      in the reverse   fitting the flywheel                                                            When replacing the  evenly                                                        and for final tightening a torque wrenchshould be                                                        used set to the       in SectionB                                                        Checking Alignment of Flywheel                                                            When the flywheel bas been removed it is                                                        necessary   to check the alignment on replacement                                                             as mentionedabove                                                            Secure the base of a dial indicator stand to                                                         tbe flywheel housing                                                            Witb the flywheel at top centre set the needle of                                                         tbe indicator on tbe flywheel periphery at T DC                                                         seeFig U3                                                            Turn the crankshaft and check the clock The                                                         flywheel should run truc within 012 in 31 mm                                                         total indicator reading                                                            With tbc base of thc indicator stand still bolted                                                         to tbc flywheel housing adjust to bring thc                                                         indicator  vertical machined face                                                         of the flywheel Seefig U4                                                             Again turn the crankshaft and check the clock                                                         The flywheel should be within 0001 in per inch                                                          002 mmoper 25 mm of radius from the centre                                                          of flywheel to indicator needIe                                                             When tbe flywheel bas been checked fot thc                                                          correct limits lock thc setscrews with we    L        I                                                          I                                                                                             Page VILJu          SCHEDULE OF CLEARANCES TOLERANCES Vu           All threads ed 00 the L4 Eogine except 00 prGprietary equipment          and the crankshaft are Unified Series aod Americao Pipe Series Tbe          crankshaft aod starting dog nut are threaded1 inch Americao Natiooal          Fine of 14 TPIUI          The new threads are not  with BSF and althougb          BSW have the same number of threads per inch as the Unified Coarse          Series intercbanging is not recommendeddoe to a difference in thread formU              The data regarding clearnncesand tolerancesare given as a guide               for personnel engagedupon major overhaulsu         2 Tbe figures in the column  Permissible Dimensionst are the               drawing sizesto which tbe parts are made These dimensionsareu              given in limit farm and representtbe minimum and maximum sizes               to which parts may be accepted when new as ror example               4985               499 111ntPn                The difference                      1      fnr                                                                        qhft the                                between     nimtpr                                                minimum   and maximum dimensionsu         3               quoted in para 2 is known as thc manufacturing tolerance Thisu               tolerancc is necessary as an aid to manufacture and its numerical               valuc is an expression of the accuracy of the design it mayalso be               considered as a numerical expression of the desired quality of work               manship For the example referred to in para 2 thc tolerance isu         4               00005               If when carrying out a major overhaul it is found that a bush and               corresponding shaft have worn and that the majority of wear hasu              taken place in the bush it may be necessary to renew the bush only               Similarly if the majority of wear has taken place on the shaft it               might only be necessary to rencw thc shaftu         5    During the overhaul of wom components personal initiative must                be exercised at all times It is obviously uneconomical to return                wom parts to service with an expectation of lire which may involveu                labour costs agai1 at an carly date          6    Further information can be obtained on request rom the Service                Division Perkins Engines Ltd Peterborough Englandu                  To ensure rou obtain the best results from your engine                   and to safeguard your own guarantee fit only genuineu                   Perkins Parts   These are readily obtainable throughout                                         the wor IdJ    J                                                                  PageV2 SCHEDULE OF BunnING CLEARANCES AND TOLERkCESTO BB ADHEREDTO  WHEN OVERHAULING ENGINES TO FACTORY STANDARDS ENGINE TYPE L4I    SCHEDULE OF BmLDG                                                             Page V3                        CLEARANCES AND TOLERANCES TO BE ADHERED TO      WHEN OVERHAUUNG ENGrnES TO FACTORY STANDARDS NGrnE TYPE L4Page V4 SCHEDULE OF BUnDING CLEARANCES AND TOLERANCES TO BE ADHERED TO  WHEN OVERHAULING ENGINES TO FACTORY STANDARDS ENGINE TYPE U                                                                   T                                                                   r                                                                   r                                                                   r    I Qu                                                                    Page Y5           SCHEDULE OF BrnLDG CLEARANCES AND TOLERANCES TO BE ADHERED TOu           WHEN OVERHAULING ENG    TO FACTORY STANDARDS ENGINE TYPE Uuuuu      uu      uuuuuuuuJ J                                                                                L4 MARINE ENGINESWlcOc        Settingsand Data                               L4 MARINE         Maximum Rating 58 BHP at 2000 rpm                                                                                   W                                                              ahead to astern or vice versa the engine throttle                                                              must passthrough the idling position thus enabling         Sump Capacity   gallons 136 litres             an easygear changeto be attained                                                                 In conjunction with tbis control system pro         Engine Types                                         vision may be madefor the fitting of a cable to the          There are two principal types of L4 Marine          throttle so that the throttle may be partly opened        ngine one type having pneuma      tic governing      to         and the other having                 When an oil operated gearbox is fitted an oi          The standard pneumatic governing is set tor         cooler must be fitted in order to cao the gearbox        variabie speedwhich is controlled by a lever from     oil The mounting for this cooler is on the top        the air intake venturi                               of the gearbox          The mechanically governed engine is virtually          An interlocking control may afso be usedin the        identical to its pneuma tic governed counterpart     case of a pneumatically governed engine fitted        the one main difference being the mechanica          with a         governor incorporated in the timing gear housing        The system employed ensuresthat the engine        This governor also is of variabie speed and is        throttle is automaticaly returned to iding when        controlled by a lever on the side of the governor     the gear lever enters the neutral position An        housing forward of the fuel injection pump           ampe measure of protection is thus afforded                                                              the gearbox inasmuch as when engaging or        Gearboxes                                            changing gears the engine throttle must alway           The 14Marine enginemay be fitted with either     be in or pass through the idling position How         a mechanicalor hydraulic operated gearbox           ever with          n bath casesthe drive to the gearbox is taken        irrespectiveof t type of gearbox fitted there is        from an input shaft fitted to the engineflywheel     no systemof Iinkage offered whereby the gearbox           Lubrication of the mechanica     I gearbox is by   may be effectively coupled to the engine throttle        meansof gravity The gearbox possesses      its own   controls        sump from which the oil is picked up by a rotating       Reduction gears of 2 1 and 3 1 fot Ieft or        disc and deivered to a drip plate at the top of      right hand rotation propellors may be fitted as        the gearbox which passesthe lubricant to the          optional equipment        working parts                                           NB When converting a mechanical gearbox           The hydraulic gearbox incorporates its own        oil pump and is in no war dependent on the            from straight through drive to 2 I or 3 1        enginetor its oil supply                             coupling at the rear of the box must be replaced           Where an oil operated gearbox is fitted to an      reduction the split type balI race behind the                                                              by a standard type of balI race        engine employing pneumatic goveming a single        lever throttle control systemmay be incorporated        linking the gearbox to the enginethrottle By this    Gearbox and Input ShaftRemoval        means gearbox engagement is determined by                Both types of gearbox may be removed in the        movement of the throttle lever With the engine       following manner        idling initial movement of the throttle lever         engagement     of the gearoox with          shaft        out increasing engine speed Engine rpm may              Remove 12 setscrews  and washers located        then be increaseri by further opening of the                around gearbox periphery        throttle control lever beyond a predetermined               Withdraw gearboxtrom input shaft        point           Thus the engine cannot be speededin neutra           The input shaft which is affixed to the engine        gear thertby eliminating the risk of damagewhen     flywheel may be removedas follows         the gearoox is engaged When changing trom                  Cut locking wire                                                                                                                            1                                                                                                                           1    t4 MARINE ENGINESW2           Remove eight securing setscrews and              A 12 or 24volt insulating return system may be           washers                                         fitted as optional extra The dynamo is loatedon                                                            the starboard sideof the engine The starter motor    Replacing Input Shaft and Gearbox                                                            is flange mounted on the port side cf the engine       First ensure that the tlywheel housing and tly      the starter pinion engagingwith the starter ring cn    wheel are correctly aligned SeeSection U             the flywheel at the aft end of the engine       Using the eight setscrews completewith washers              I    fit the input shaft to the engine tlywheel and                    tighten evenly       Securethe baseof a clock  the     and adjust the clock so as to set                                                            ce                                            D    the needle on the outside diameter of the input                                                I    shaft and check that the shaft is central The    limit in respectof inpu1 shaft concentricity is set                                                                         7Z   at 003 in 076 mm total indicator reading       With satisfactory alignment attained the secur    ing setscrews  should then be wired together                                                                                                          The gearbox may then be eased into position    on the input shaft With the                                                                                                                                                       care should be taken to ensurethat tbe key on the    input shaft is in line with the keyway in the gear    box hearing Secure the gearbox to the tlywheel    houing by meansof the 12 setscrews  and washers    and refit propellor shaft    Locating RingMechanical Gearbox       A modified bevel locating ring locking plate has    been incorporated in mechanical gearboxes for                                  I                         fitment to L4 marine engines       This latest locking plate is trucker in section    than the original type and of different specification                                  material and bas been incorporated to eliminate    any possibility of bending or failure of the plate    in service                                                                                                With the advent of tbis modification the locking                     medium whereby this plate is securedwas altered            bid                                                                                                              so that now two holes fr in BSF by f6 in    1429 mm deep are drilled and tapped in the    locating ring and pinion cageto accommodate    Allen grubscrews                                                      two                      fr in BSF by tin 1270mm                                                                                                                                                                          cg    long                                                                               FigWI                                                                                                                           or       It should be noted that after assembly  the edges   1 and 2 From the 18 Diameter Pilot holes in t evelloca                                                              ting Ring drill two holes 1764 Diameter to a depth of    of the slots  bevel ring locating         38 in bevel wh1 casiCW  and tap 516 BSF to a depth    plates should be peenedover as also should the            ot 14 in bevel wheel cAing to accommodate two Allen                                                              Screws 516 BSF x 12 in length These two holes    drillings into wbich are fitted the grubscrews           must not be drilled and tapped until the bevel locating      r       Details of  are illustrated in       ring has been locked in position with locking plates and                                                              slots peenedover    Figure Wl illustration and it is recommended    that   3 Bevel locating ring locking slots peened over locking    all gears sent in for servicebe similarly modified        plates                                                      or    when necessary                                                            Water Circulation    Electrical Equipment                                     The engine may he so arranged as ro accom      With the L4 Marine engine a 12volt earth            modare any one of the foIIowing three types of    return systemis employedas standard equipment          cooling system                                                                                                                           r                                                                                                                           or                               L4 MARINE ENGINESW3             along the keel of the craft Prior to reaching the             water pump the coolant passes   through the lubri             cating oU cooler which is fitted as standard equip             ment to engines employing this type of cooling             system The coolant then enters the engineat theu            forward end of the cylinder block and is expelled             at the forward end of the cylinder head From             the cylinder head the water is discharged backu             into the keel pipes via the  cool             ing jacket It will be observedthat this is a closed             circuit type of cooling system the water in the             keel pipes being cooled by the water throughu   I                which the craft passes                With this type of cooling systema thermostat             is fitted as optional extra                Information  Keel Pipes             may be obtainedon requestfrom ServiceDiviu            sion Perkins EnginesLimited Peterborough            Indirect Cooling System Heat Exchangeru               This type of cooling system utilised in con            junction with a heat             separate water pumps viz the rubber impelleru             and centrifugal types                The rubber impeller type pump is used to            circulate sea water through the heat exchanger            which is affixed to the front of the cylinder head            Overboard dischargeis taken through the exhaust             manifold cooling jacket The lubricating oil cooler             which is  indirectly cooledu            engines is fitted to the front end of the engine            sump and is on the suction side of the sea water            pump                Circulation of the closed fresh water systemisu           etIected by means of the centrifugal pump which            is belt driven from the crankshaft pulley Water is            drawn from the heat exchanger and enters theu            cylinder block at the rear of the water pump            Af ter circulation through the engine the water is            expelled from the front of the cylinder head back            into the heat exchangeru              The top part of the heat exchanger fornls a            header tank fjr the fresh water and a pressure            type filler caf with overflow pipes is providedu            The valve in the cap operates between 3 and            4ilbssq in 2330 kgsq cm A thermostat            is supplied as standard for this type of cooIing            systemu           Water Pum                From the foregoing it will be apparent that alt            L4 Marine engines irrespective of applicationu            incorporate the rubber impeller type of water            pump while those  indirect heatuu                                                                                                                lA MARINE   cooling also incorporate a water pump         When replacing the cam fitted in the impellerof the centrifugal variety                            housing be certain to treat the entire top surface                                                       rear face and securing setscrewhole with a  Water Pump                             able jointing compoundNOTE  This cam will go  Sincethe centrifugal type water pump employed        into placeone war onlyon those Marine engines incorporating indirect            With the assem   bied pump fitted to the engineheat exchanger cooling systems is identica          backlash between the pump and Iamshaft gearswith that pump titted to L4 engines in genera        should be 003 in to 009 in 08 to 23 mm  for this type of pump          achieve this in production two joints may havemay be obtained by referring to Section Q             been fitted betweenthe pump gear wheel housing                                                       and the ngine timing case Should this be SQRubber Impeller Type                                                       ensure that both joints or two new joints are   This type of pump is gear driven inasmuchas a                                                       replacedwhen refitting the pumpgear wheel attached to the impeller driving shaft                                                          ti the engine is to be withdrawn from serviceis in constant meshwith the enginecamshaft gear                                                       for any length of time it will be  the pump itsef being ocated on the star                                                       effect lubrication of the rubber impeller at theboard side of the engine directly below the                                                       commencementof the storage period Tbis maydynamo                                                be achieved by removing the end cover Item 1Removal aod Dismaotling                               Fig W2 and placing glycerine betweenthe vanes   First disonnect water inlet and outlet hoge        if the impeller Item 2 Fig W2connections The pump may then be detached by                                                                                                                          Exhaust  the setscrews that secure it to the enginetiming case                                             The exhaust manifold is water cooled and                                                       constructed of cast iron An air releasecock is  To dismantie the pump proceed as follows                                                        provided at the forward end of the manifold      Remove rear end cover                                                       jacket whereby any air present in th water      Remove impeller                                                       cooling systemmay be removed      Remove wearplate  W ith the front bearing cover removed a suitable    OU Coolerpress may be used to press out the impeller shaft         Provision is made at the front end of tle sumptogether with the front bearing leaving the driving   for the fitment of an  oir coolergear wheelloose in its housing                        With this heat from the engine oir is lost as it  The cam in the impeller housing maf then he          circulates round a systemof tubes through whichdetached by removing the single securing setscrew     are pumped water from the cooling system       Remove rubber seal in impeller housing            With the fitting of a hydraulic gearbox a       Remove rubber  0  ring                     further similar type oir cooler must be titted in       Remove distancepieces                         order to cool the gearbox oirtThe mounting for                                                       this additional cooler is on the top of the gearbox   The driving gear wheel housing and impeller                                                          The pump necessary    to lift the oil is nclosedinshaft rear hearing may then be removed from the                                                       the gearboxpump body       Finally remove front rubber seal               Sump Oir Pump Hand Operated   To reassemble the water pump the reverse             On the majority of marine installations it isorder of the above procedure should be adopted        impossible to gain accessto the sump drain plugcare being taken when replacing the rubber            which is situated on the bottom of the sumpimpeller that the blades alllay in the same direc     Therefore in order to facilitate the draining ottion relative tv the rotation of the pump ie        the engine oil a hand pump may be providedblades trailing                                       This pump when used must be titted emote    from   When reassembling ensure that the rubber           the engine Drainage of the sump is etfected byimpeller is coated with a layer of water resisting     operation of the pump after attachirg a length ofgrease It should also be noted that if necessary    suitable piping to the inlet side of the pump andthe impeller may be dismantled without removing        placing the free end of the pipe into the SIImpviathe water pump                                        the dipstick orifice      J                                                                                                                                                                           14 MARINE   EN GINEs   W 5                                           L4 MARINE ENGINESy         DAlLY            Check Dil level in sump and gearbox                                                                 strainer when fitted                                                                    Examine engine holding down balts u            Checkcooling water circulation                         Drain oil trom sump and fill with new lubricatlt             oil pressure                          Clean feIt elementin lubricating oil filter            Check water level in header tank of heat                Unscrew drain plug on final fuel filter replace          exchangerwhen fitted                                  vhenclean fuel appearsu         EVERY 50 HOURS            Clean gearbox oil filter hydraulic type gearbo                                                                 EVERY 500 HOURS                                                                  Clean and           only                                                  Renew feIt elementin lubricating oil filter            Check and if necessary   top up batteries with      Clean gauze trap in Jubricating filter body          distilled water          EVERY 100 HOURS                                        EVERY 1000HOURSu                                                                   When fitted examine heat exchangerfur scale             Check oil level in reduction gearbox where          fitted                                                formation and descaJe                                                                                      if necessary              Lubricate and examine adjustment of single           Inspect commutators and brushes of dynamo                                                                 and starter motoru          lever throttle control if fitted              Clean prefilter if fitted to lift pump             Renew element in Final Fuel Filter              Checkoil filw to rocker shaft                    WheneverEngine is removednom Boat              Examine valve springs and check tappets                Clean sump straineru             Examine and clean water inlet weed trap and            Cleanout fuel tank                                      For preservation of laid up engines see page F 2uu                                                                                  uUiUUuY                                        APPROVED             Available trom V L Churchill  Co Ltd Daventry  England         PD IC Valve Guide Remover and Replacer              R6 P3144 3152 83152 4192 4203         Engine Type All                                    Removes water pump pulley on1yon         With tbis tooI all valve guidescan he removedand   6305 L4 4270 499 4107 4108         replaced provided pulIer bars are available        Removeswater pump pulley and camshaft gear                                                             on         PD ICI PuIIer Bars                                 6354         Engine Type All         Two bars are supplied for usewith PD ICto suit      PD lSSA2 SDM1D Adjustable PuJIer Adaptors         h in and i in ict valve guide bores               Engine Type P3 P4 P6                                                             To remove Iow position water pump pulley         PD IC2 Valve Guide RepJacing   Stop         EngineType 499 4107 4108                        PD lSSA4 smaU Adjustabie ruller Adaptor         When the valve guide is replaced using one of       EngineType         thesestopsit will ensurethat the guide protrudes   P3144 3152 B3152 4192 4203         the correct amount above tbe top face of the        Removal of Dil pump gear         cylinder head                                                             No 3 Tension Wrench         PD IC3 Valve Guide Replacing Stop                  Engine Type All         Engine Type 6354 4236                            t in squaredrive 25 to 170lbf ft         Remarks SeePD 1C2                                                             PD ISO Cylinder Liner Remover and Replacer         PD lC4 Valve Guide ReplacingStop                                                             Engine Type          Engine Type                                                              6354 4236 3152 03152 4203 04203         P3 P3144 B3152 3152 4192               4203                                                             6305         P4 P6 6288 6305         Remarks SeePD lC2                                 PD 1501Cylbttr Liner RemoverRepfaer                                                                                                   Pa         38 U3 Piston AssemblyRing                           Engine Type          Engine Type All                                    6354 4236 3152 03152 4203 D4203         This is an expandable piston assemblyring for       6305         Stctand  all enginetypes         For usewith PD 150         PD 37 Flywheel Runout Gauge                         316X Vatve SeatCutter HandJe         Engine Type All                                    EngineType AII         With this tooi a check caD speedily be made on     This tooi is required for the operation of ali         the alignment of the  or    cutters and pilots         back plate                                                             31610Valve Seat Cutter Pilot         PD 418 PNon Height and Vatve Depth Gauge                                                             Engine Type         Engine Type All                                    P3 P3144 3152 B3152 4107 499 4108         For checkingpiston heightsand valve depths         4192 4203 P4 P6 6288 6305         PD 155A SomDAdjustable ruller                       This pilot is suitable for all guides that have a         Engine Type All                                    nominal frr in id bore         CaD be used with suitable adaptors to remove                                                             31612ValveSeat   CutterPilot         water pump pulley oil pump drive gears and         camshaft gear                                      Engine Type                                                             L4 4270 R6 F340 56 4236 6354         PD 155Al Small Adjustable PuUerAdaptors            This pilot is suitable for all guides having a         Engine Type                                        nominal t in iid boreJJ  Pilot                           7066Orcfip Pliers                                     T EngineType 42360015in oversize                    Engine Type  AII This piJot is for vaJve bores which have been          Two types of points are available t in shaft size reamed0015 in oversize                               t in  1 in B shaft sire I in  3 in 31613Valve SeatCutter Pilot                           Alignment Jig Engine Type 42360030in oversize                  Engine Type All This piJot is for vaJve bores which have been         Enables a quick check to be made on the align reamed0030 in oversize                              ment of connecting rods  various adaptors are PD 137 Valve Bore Reamer 0015 in overstze         required as follows  EngineType 4236                                     336 MultiPurI8e Con Rod Arbor                      T This reamer is only suitable for guideJess                                          cylinder    Engine Type All heads                                                Required with the above tooIPD 138 Valve Bore Reamer 0030 in oversize           PD 3361 Adaptor                                       rEngine Type 4236                                     Engine Type This reamer is onJysuitable for guideJess                                        cyJinder       P3 P3I44 B3152 3152 4192 4203 P4heads                                                 P6 6288 6305PD 31723Valve SeatCutter Exhaust                      This adaptor is fitted into the big end bore whenPD 31726Valve SeatCutter fnlet                        checking alignment Thin wall bearings  Breaker Exhaust                           PD 3363 Adaptor317G25 GJazeBreaker fnlet                            Engine Type L4 4270Engine Type                                           Remarks SeePD 3361P3 P3144 B3152 3152 4192 4203 P4P6 6288 6305                                         PD 3365 AdaptorThe above cutters have beendesignedto cut seats        Engine Type 499 4107to the correct angle and at the same time reduce       Remarks SeePD 3361seat width It is strongly  the         PD 3366 Adaptorglaze breakers be used first as this will greatly      Engine Type 6354 4236reducethe chattering of the cutters                   Remarks SeePD 3361PD 31725Valve SeatCutter Exbaust                     6118 VaJveSpring CompressorPD 31729Valve SeatCutter fnlet                        Engine Type All317GJOGlaze Breaker Exhaust and fnlet                 Thirivalve spring compressorbas beendesig1ed toEngine Type                                           remove valve springs without removing the cylinL4 4270 R6 F340                                       der head providing the adaptors are  SeePD 31723                                                       PD 61181Valve Spring  SeatCutter Exbaust and Inlet               Engine Type 499 4107  Breaker Exbaust and fnlet                 The adaptor is fitted to the rocker shaft securingEngine Type                                           studs6354 4236 D4203 D3152                                                       PD 61182 Valve Spring  SeePD 31723                                                       Engine TypePD 31718Valve SeatCutter Exhaust                      P3 P4 P6 6288 6305 S6PD  InJet                         Remarks SeePD 6118  1317G19 Glaze Breaker Exhaust and fnJetEngine Type                                          PD 61183 Valve Spring                                                        Engine Type 499 4107 4108                                       P3144 B3152 3152 4192 4203 L4Remarks SeePD 31723                                  4270 R6 F340FC9900 Ator      Tester                               Remarks SeePD  All                                        PD  Compressor                                                                                     AdaptorThis is a portable tester fitted with a paper filter   Engine Type 6354 4236element                                               Remarks SeePD 61181    D                     PD 130Foei PumpAllen Screw  Wreoch                  6000c4 Comon      Tester Adaptor             Engine Type 4192 4203 499 4107 4108           Engine Type  6354 4270 4236             Used to removethe Allen  fuel       Remarks See6000c3             injection pump                                                                 6000C9 ComD       Tester Adaptor                 Tester                          Engine Type 499 4107 4108y             EngineType Seeadaptor details                      Remarks See 6003             Usedlor  compressions                                                when using             he following adaptors                             6400 Crankshait F1l1etRadii Rollblg Tooi                                                                 Engine Types              6000C3Comon         Tester Adaptor                                                                 P4 4192 4203 P6 6288 6305 4270             Engine Type                                        For co1d rolling of fillet radii on certain crankshaft             P3 P6 P3144 83152 3152 P4 4192                 main joumals             4203 6288 6305 L4 R6 F340             This adaptor replacesthe atomiserlor compres       64001 Adaptor Set             SjOR testing                                       For use with the aboveI                                                            uu3                    1                                                                                                                                                                    00          CoO                                     C               0                         OU                             CE                                                 0 00                                                                                                                                                                                                                                          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