Your Complete Guide to Rubber Impeller Pump Identification 18PaavawwUpW 13vudduv fe vA 0vudduv fe vAAAvudduv fe vAQr8eyddywp3 YVMwp3 seawater pump is the heart of the marine engine supplying a continuous flow ofraw water to maintain temperatures consistent with the demanding the years Sherwood seawater pumps have developed a reputationof excellence in qualityand today are chosen for their performance and the most prestigious marine engine the beginning dating back to 1903 William Sherwood and his friend and David Buick of General Motors fameated a copper brass parted ways as Buick became more interested in the then developed the plumbing accessories and beer equipment business intoa foundry and machine shop as Sherwood was sought out by Ford the Dodge autodriven industries in Detroit automobile engines and boat hulls to increase speed with greater detail styleortHis company William Sherwood325s expertise ofveloped the first seawater pumps formarine inboard enginesThe commitment in the marine field continued with the next generation of Sherwoodar II furthered this commitment as Sherwood became a prime supplier ofCraft built personnel carrier with a Sherwood pump was the first allied Landing Craft tomandy beachesDuring this time Sherwood also supplied pumps to marineengines of Buda Caterpillar Cummins Gray Hercules and PackardWith the advance of pleasure boating after WWII activities were turned the exacting cooling pump needs of this growing pace with the new engines from GM Chrysler and Ford by continuing relationships with ChrisCraft Chrysler Marine Crusader EscortMarine OMC and Pleasurecraft MarineIn the 1970s Sherwood joined Hypro and continued its focus on pump and the Sherwood brand has taken the history of qualitydesigns and manufacturing to become the seawater pump of choice for new marineDiesel and Gasoline services customers throughout the world withine industrs leading engine manufacturers independent dealers 320 as well as with direct manufacturing regional sales and in Minnesota Illinois California and the United KingdomThe First 100 YearsTable of Service PumpsImpellers and Brackets17000 Series18000 Maintenance and visit us at 318340Model G151G157Star Power Marine PowerModel GC1GC4GC5The 1 Reason for Premature Engine Wear Is Overheating To 4382VolvoOMC R30GR30G1Model G1801G1805The 1 Reason for Premature Engine Wear Is Overheating To Porting G2 G4 G11Heavy Duty Design for Pulley Drive orMechanical Seal for Extended Seal LifeRear Support Bushing for Load Absorptionive Shafte Horsepower R30G 12 R50G 34 R102 2Dimensions InchesModel HousingSealed Ball for Engine Cooling Either as Replacement for ObsoletedPump or New InstallationA selfpriming vacuum is upon leaving the cam drawing liquid into the pumpThe rotating impeller carries liquidxible impeller pumps can pass fairly large solidsWhen the flexible impeller vanesfrom the pump in a uniform flowopposite direction by reversing therotation of the a 1a 114 32mmWidth 158 41mmWidth 34 19mmWidth 2532 20mmWidth 4 102mmWidth 278 73mmThreaded Insert Version with PullerWidth 4516 110mmWidth 278 73mmPart 65mm2 as MerCruiserVane of VanesVane x 1316W x 18H14 08888K9529G K9820G L9841GImpeller vanes were used for raw water pump applications prior to the design of the flexible rubber impellerVanes are packaged in sets and must be ordered by assembly numberVane Kits IncludeAll Gaskets Orings new Technical Service Guide and Engine Specified Impeller for up to 50 Sherwood pumpsImpeller Kits Availableof the same dependable Sherwood design that has been used since the 17000 series impeller was needed to replace the impeller using genuine Sherwood partsContains thrukey insert that allows for ease of installation in hardtoreach Contains17000C Impeller with thrukey insert Oring and Rubber capPatented Impeller with threaded insert for ease of removal and Impeller Pullercontain a patented threaded insert designPatent No611685523631 Puller used for24412 Puller used forThreaded the coverInsert the Sherwood puller into the threaded insertScrew the puller against the shaft lifting the impeller out of the housing or until looseTwist and pull the impeller out of the pumpApply a nonpetroleum based lubricant to impeller iesilicone or soapy waterOptionUse puller tool to push impeller into pump by loosening and lowering nut until tightens against impeller insert then turning for use a small amount of nonpetroleum based lubricant to helpThruKey Design Impellers Remove the coverTwist and pull the impeller out of the pumpApply a nonpetroleum based lubricant to impeller iesilicone or soapy waterFor nonrock key version pumps install the key into the shaft prior to installing the impellerAfter the impeller is all the way on the shaft and into the housing rotate the impeller to align the keyway of theshaft to the key slot on the shafty into the keyway and if applicable place the rubber cap over the key opening to prevent Then use a small amount of nonpetroleum based lubricant to help hold the oring in place while replacing the coverFull Flow Filtering with Ultra Low Pressure NonCorrosive Clear Bowl with Optional Mounting NumberPort SizeScreen MeshBracket No159351220 MeshNA20 Mesh1423911220 NumberScreen NoOring NoBowl Pump and Parts Service SectionThe following parts list is made available for the identification of major components of raw water pumps currently active inmarine engine the pump may no longer be a unit in production it may be a serviceable pumpThis isintended to assist the distributors and their dealers with identification and ordering of partsGENERAL PARTS indicates parts are obsoleteBlank space indicates part not used in pump designEngine Life NPT12 Life NPT34 Life Life NPT12 Life NPT12 NPT12 M413E 141 1409959K recirculating pump clockwise rotation from pulley endO Obsolete pump no longer in pump must purchase through engine manufacturer or their distributorood pump purchase direct from Sherwood shown in this column is a direct indicates no direct replacement availableNPT indicates threaded port national pipe thread12 NPT12 NPT Dimension indicates outside diameter of port1 141 14 Signifies that the pump is sold without any port elbowsWO Port ElbowWO Port ElbowFor gear pumps first item drive gear second item is the Impeller 22Pump uses both a 09959 and 10615 impeller09959K 10615KComplete Seal and Seat Seal followed by the Lip BM10261GO38 NPT38 NPT12 NPT34 WG8453O11Model NPT1 NPT12 NPT1 NPT1 NPT12 141 MarineG7S1 141 141 141 1409959K 14109959K KITREPAIR KITLIP PART GEAR ADAPTERENGINE KITREPAIR KITLIP PART 141 141 141 141 and and 141 NPT1 RH RH RH NPT1 LH LH LH NPT1 142105454257vy LH LH LH RH RH RH NPT34 NPT34 NPT1 NPT1 141 NPT1 141 Boat Marine4 NPT34 V8 CW V8 CW V8 CW V8 CW V8 CCW V8 CCW V8 215225 V8 215225 NPT12 121 121 GEAR KITREPAIR KITLIP PART NPT34 NPT34 6 Cly 141 NPT38 NPT38 KW GasG907 01SG907 38 NPT38 141 Corpof AmerSee PowerS1 121 141 DieselG56S1 141 MDJFRPGCO34 NPT34 NPT34 141 DieselL10BS1 141 MotorsS1 141 Flagship 141 141 141 NPT12 Volkswagon Eng4 Engine US40107 NPT34 NPT34 NPT1 GEAR KITREPAIR KITLIP PART 454G552P1 141 141 121 121 MedalistAtomic NPT34 141 NPT38 NPT12 NPT34 NPT34 6 NPT12 Life NPT12 Life NPT34 Life Life NPT12 Life NPT12 NPT12 141 GEAR NPT12 121 121 121 121 121 121 Shaft Bearing AssyG1804O2 Shaft Bearing AssyP2 Shaft Bearing AssyO2 122 Shaft Bearing AssyP2 122 Shaft Bearing AssyG1807P2 Shaft Bearing AssyG1807101P2 Shaft Bearing AssyG1808O3 343 Shaft Bearing AssyP3 343 Shaft Bearing AssyP3 343 Shaft Bearing AssyPG1810X2 Shaft Bearing AssyG1810XSWO Port ElbowWO Port Shaft Bearing 12 Shaft Bearing 343 343 Shaft Bearing AssyG2201201P3 343 Shaft Bearing 12WO Port Shaft Bearing Port ElbowWO Port Shaft Bearing AssyG2601XSWO Port ElbowWO Port Shaft Bearing NPT38 NPT38 NPT38 NPT38 121 121 121 121 121 NPT38 NPT38 141 141 141 141 141 141 141 141 OP176X1 341 Port ElbowWO Port Shaft Bearing AssyP1710ASWO Port ElbowWO Port Shaft Bearing Port ElbowWO Port Shaft Bearing Port ElbowWO Port 341 Shaft Bearing Shaft Bearing AssyP1716XS21 Shaft Bearing Port ElbowWO Port Port ElbowWO Port OP1710A1 341 Shaft Bearing KITREPAIR KITLIP GEAR Shaft Bearing AssyP1722XS21 Shaft Bearing AssyPP1710AWO Port ElbowWO Port Shaft Bearing AssyOP1710AWO Port ElbowWO Port Shaft Bearing AssyPP1726TCWO Port ElbowWO Port Shaft Bearing AssySWO Port ElbowWO Port Shaft Bearing AssyP1727ASWO Port ElbowWO Port Shaft Bearing Shaft Bearing Shaft Bearing AssyOP1727AWO Port ElbowWO Port Shaft Bearing AssyOP1722X1 341 Port ElbowWO Port Shaft Bearing AssyPP1730AWO Port ElbowWO Port Shaft Bearing Shaft Bearing Shaft Bearing Port ElbowWO Port Shaft Bearing AssyPP1730A21 Shaft Bearing AssyPP1730A21 Shaft Bearing AssySWO Port ElbowWO Port Shaft Bearing Port ElbowWO Port Shaft Bearing Port ElbowWO Port Shaft Bearing Port ElbowWO Port 12NPT1 12NPT1 Shaft Bearing Port ElbowWO Port Shaft Bearing AssyP2701XSWO Port ElbowWO Port NPT1 KITREPAIR KITLIP KITREPAIR KITLIP GEAR GEAR B06 P105 P109 G1004 G1005 G1006 D60 E05 R10930G C03 F10 S11040G B04 R10970G RPBC F95 P1716B P173 P1722B P1727FB P1730F 111111P1731F P1711 P1719 P1719F1111G3 G4 G5 G51 G7 G7B G8 G26 G451 G452 G46 121131G50 G552 G56 G85 H85 K90 L10 L10B L80 L90 GC4 GC5 G157 G151 G155 G2 G15 G20 G21 G22 G302 G302B G951 P105 P1730F P176 P172 P1710 P1726 P1726TC GC4 GC5 G157 G151 Include the FollowingKit For Model from pump to pump are primarily a resultof different methods of drive and 1kwashers 234BThe housing assembly including the impeller 5ved from the body assembly along with the oring 67et 8CRemove the woodruff key 910If the shaft is to be used again and if it is put in a vise always use lead overthe jaws of the vise so that the shaft is not end of the pump pulley end hub end shaft endve retaining ring remove pin 17ve woodruff key18w if usedNOTEIf the pulley 2324y to locate asupport directly between the pump body and pulley or hub as close to the shaft as possiblePress the shaft out of the pulley orhubMake sure the body is free and not the large internal retaining ring 16ingGSupport the body and press the shaft bearings 1920ings 11ing or pulley endof the bodyHThe seal assembly 14It can be removed by pushing a tool through the bearing end and up against themetal or back side of the sealNOTEOn some pumps there is a spacer located between the pulley hubing on theshaftOn other pumps the bearings are positioned on the shaft with a retaining ring on each endSupport the bearings on theinner race and push the shaft out of the of the cam and the screw 22Wipe offx that gets into the impeller a retaining ring 11roove from the impeller endPush the ball bearing 19ver theshaft 10Press on the inner race of the bearingPush the bearing up against the retaining ringAssemble a spacer and thenthe second ball the second retaining ring over the shaft and up against the ball bearing if requiredCThere is a large internal retaining ring 16vides a shoulder for the bearings approximately 138from the bearing end of the bodyIf it has been removed it must be inserted at this timeMake sure that seal is pressed in squareA tool should beused to assure proper assemblyEPush the bearing and shaft assembly into the body using care not to cock the bearingA tool is recommended that will give youing in place with the large internal retaining ring09959 10615 and 15000 G Series Technical 10615 and 15000 G Series Technical CraftChris CraftChris Cyl4 Ring SealSeat Ring Pulley or Repair Repair See page 39 for the Preventative Maintenance Schedule and page 28 for the Contents of the KitsFAssemble the seat assembly 13asher 12ing 11 or 15ver the shaft from the impeller endLocatethe white ceramic surface against the seal 320 Do not damage scratchamic surface of the seat or the seal and seatassembly might leakLubricate the rubber part of the seat and use a tool for ease of assemblyGWhile supporting the shaft press the pulley 2324Secure pulleyhub with pin 17ey 18retaining ring or setscrew as neededPress the woodruff key 9Make sure the stainless steel key is used at this the impeller 54Assemble the gasket 873w holesReplace the lockwashers 2tighten the screws 1KMake sure the oring 6ly located in the groove in the housingA small dab of grease will help hold it in position untilthe housing to body screws are tightened09959 ChartSherwood Model318 340318 360318 360454V8 Chevy318 34046 Cyl Ring SealSeat Ring Ring Pulley or See page 39 for the Preventative Maintenance Schedule and page 28 for the Contents of the Kits10615 Chart15000 Ring SealSeat Ring Pulley or Repair See page 39 for the Preventative Maintenance Schedule and page 28 for the Contents of the KitsThe following procedures apply to all R Series from pump to pump are primarily a result ofdifferent methods of drive and mountingPump numbers can be found on the tag or stamped on the pedestal base of the the screws 1kwashers that hold the cover to the body 3Pull the cover and bushing assembly 2ivee the vellum gasket 5Sherwood recommends replacing the gasket each time the pump is assembled however if youplan to use the same gasket it should be submerged in water until pump is reassembledIf gasket dries it will shrinkCThe impeller 6w be removed by using pliers and grasping a vane on one side then the other alternating positions ande sure you have a good grip on each vane so the pliers will not slip and damage the impellerDThe cam 7ved by removing the screw 8wn through the top of the body between the intake and ERemove the two screws 18kwashers from the bearing housing 9ive shaft end of the housingThis will allowyou to remove the bearing housing seal assembly and shaft from the bodyFRemove the woodruff key from the shaftIf the shaft is to be used again and if it is put in a vise always use lead over the jaws ofRemove the retaining ring 10The seal 12w be removed from the shaftNote how they can be properly reassembledFor the E35 support the hub and press the shaft and housing assembly off of the hubIBy removing the large internal retaining ring 11ing housing the bearing 15bearing housingSupport the bearing housing and press on the shaft from the impeller endJPumps designed without separate bearing housings may require shaft removal from opposite end depending on housing designKThe seat assembly 13ing housing and can be removed by pushing a tool through the bearing end andagainst the rubber or backside of the seatAssembly care should be taken not to crack the bushingA tool that pilots on themly against the end of the bushing is assembling the cam 7ermatex 1 on back side of cam and the screw 8Wipe off anyPermatex that gets into the impeller a retaining ring 10roove from the drive shaft endPush the ball bearing 15ver theshaft 4Press on the inner race of the bearingPush the bearing up against the retaining ringAssemble the second snap ring10ver the shaft and up against the ball bearing from the flat shaft ending and shaft assembly into the bearing housing 9k the bearingA tool is recommended thate you uniform pressure on the bearing outer raceLock the bearing in place with the large internal retaining ringEFor pumps without a bearing housing assemble the seat 133amic facing the shaft and bearing assembly into the housingLock the bearings in place with retaining ring 11While supportR Series Technical Size Drive Ring Ring Repair Repair Maintenance Schedule and page 28 for the Contents of the KitsFFrom the opposite end woodruff key end of the shaftle the seat 13ver the shaft rubber side firstPush it into thecounter bore in the bearing housingDo not damage scratchamic surface on the seat or the seal and seat assembly might leakGPush the seal assembly 12ver the shaft and down against the seatDo not damage the black carbon washer that ridesagainst the the third retaining ring 10It will be necessary to compress the seal assembly to allow the retaining ringto enter the groove on the shaftPress the woodruff key into the keyway in the shaftJAssemble the small gasket 17ver the pilot on the bearing housing and assemble the complete shaft bearing seal assemblyto the bodyUse the two long screws for fastening the bearing housing to the bodyKAssemble the impeller 6ver the shaft 4Line up the key in the shaft with the keyway in the impeller and push the impellerLPush the gasket 5ver 2ver the dowel pins and attach the cover with the screws 1kwashersThe following procedures apply to all 17000 Series from pump to pump are primarily aresult of different methods of drive and mountingPump model numbers can be found stamped into the cover plate of the the three bolts 1k washers 2ver 3The cover and oring 4w freeThe impeller enderNormally impellers 7ved using two pair of pliers to grip two of vanes on opposite sides of the impellerA penetrating lubricant will help loosen a stuck impellerAlso rotating the shaftby hand may help free the impellerThe 316323key 6ved at this timeve any pulleys or drive gears 25ive shaftFor tapered shaft models all models except P173 P1719necessary to remove the shaft nut and pull the gear or pulley with a pullerFor models with pressed on gears P173othreaded holes are provided in the gearAn appropriate puller may be attached to these two holes to remove the gear from thescrews 21The screws are removed by using a hex socket wrenchMore currentmodels are mounted with four 8mm flange hex head boltsThe adapter is then removedIf the lip seal 23The cam 8w 9vedThe internal wear plate 13The retaining ring 10asher 11seal seat 14vedExternal snap ring pliers are requiredEFrom the ball bearing end the internal snap ring 17ust be removed on models P171 through P176Later models haveextended bearing assemblies and are held together by means of the flanged adapterThe bearing assembly 10121619 and 20is pressed out of the body from the impeller end of the housing The two external snap rings 10ved from the shaft 19along with the bearing washers 12mitting removal of bearings 20The mechanical seal 15y now be pressed from mechanical seal 1518A small amount of Permatex or other sealant should be used to insure external snap ring 1019Next place washer 12ing 20ing spacer 16ing 20asher 12xternal snap ring 10The bearings will have to be pressed on from the that it is extremely important to properly align the bearings to the shaft prior to press otherwise the possibility exists ofgalling the shaft in the area of the lip sealThis completes the bearing and shaft assemblyPress the bearing and shaft assembly into the housing 18On older models replace the internal snap ring 17On new modelpumps the bearings will be flush to the end of the housing and will be retained with the flange adapter 24DOn all older model pumps with mounting adapters the lip seal 23ve to be replaced prior to replacing the flange adapter24Care should be taken to insure proper alignment of the lip seal to the adapter and that the lip seal is uniformly pressed toprevent distortionThe adapter 24y be reassembled to the pump housing 18The use of Loctite 262 orEThe ceramic seal and rubber cup 14w installed from the impeller end of the housingCare must be taken to remove allburrs from the keyway to prevent cutting of the rubber cupIf possible a half thickness key can be used to assist in assemblyIn 17000 Series Technical the ceramic and boot a pusher should be used with a diameter only slightly greater than the shaft diameter 80Soapywater or a lubricant from a seal manufacturer may be used in assemblyOil or grease must not be used as it will prevent the rubbercup from properly gripping the shaftThe seat and cup are pressed just beyond the externalsnap ring grooveThe seat should betially dislodged during the press procedureThe washer 11xternal snapFThe internal wear plate 13 antirotation pin aligned with the cast slot in the bottom of the housingThe camw 9Older model cam screws were sealed by means of a nylon washer or other sealant to seal the cam screwThe cam screw should be inspected to insure that it does not protrude belowthe camThis condition is possible if the nylon seal is badly deformed or if a substitute screw is usedShould the screw the cam replace it with a new screw or grind flushFailure to do so will result in immediate impeller damageAt this time if applicable press on any gears 25ysThe shaft 19ust be securely supported from the impeller endand in line with the pressFailure to do so will result in either damaged bearings andor a canted gear with excessive run outHInstall the impeller 7icant such as silicone or soapy waterThe use of oils or grease will resultin a damaged impellerThe impeller is installed using a twisting motionInsure the impeller blades are bent in the same directionas upon removalOnce installed rotate the shaft to align keyway and slide the key 6Then cover end with the rubberSherwood Screw Ring PlatePin SealSeat Lip Screw Port Repair See page 39 for the Preventative Maintenance Schedule and page 28 for the Contents of the procedures apply to all 18000 Series from pump to pump are primarily aresult of different methods of drive and mountingPump numbers can be found stamped into the cover plate of the 2ver 3Remove the cover quad rings 45es 6earplate 7Note the direction of the impeller bladesto ensure proper replacement of the impeller during the assembly pin 8all out from its placeUsing external snap ring pliers remove the retaining ring 9DSlide the washer 1011ERemove the bolts 121314FSlide the housing off of the shaft and body assemblyGPress the seal seat 15le remove the drive gear assemblywhile supporting the drive gear 16ve the nut 17ut washer 18key 19Slide the gear off of the shaft and remove the thrust washer 20IUsing internal snap ring pliers remove the retaining ring 21Remove the bearing shield 24JPress the bearing and shaft assembly 22tion that drives the the bearings for loss of grease corrosion and rough rotationIf the shaft or bearings exhibit such a wear replace the entire shaft andbearing assembly 22WarningDo not try to build the shaft and bearing assembly from the individual parts but instead purchase the entire shaft andbearing assembly listed belowDue to extremely tight tolerances special assembly procedures for this assembly must be followed toprevent galling of the shaft in the lip seal arealyReplace the washer 252313king ring of the lip seal towardway from the engineCare should be taken to insure proper alignment of the lip seal to the pump bodyand that the lip seal is uniformly pressed to prevent Series Technical the shaft and bearing assembly 22CSlide the bearing shield 24ingUsing internal snap ring pliers install the retaining ring 21EPress the mechanical seal seat 15amic seal face or gray silicon carbide face toward the outside of the seat boot with a water soluble lubricant or soapy water for easier assemblyOil or greasemust not be used as it will prevent the rubber cup assembly from properly gripping the housingThe seat should be inspected totially dislodged during the assembly the housing over the shaft and body assemblyFasten the three bolts 12When applicable replace the drive gear assemblySlide the thrust washer 20ingPlace the key 19Replace the washer 18ut 17While supporting thedrive gear torque the nut to 270 the inter rubber portion of the mechanical seal 11ater soluble lubricant or soapy water and slide the sealonto the shaft with the carbon or silicon carbide portion of the mechanical seal toward the seal seatOil or grease must not beused as it will prevent the mechanical seal from properly gripping the shaftPlace the washer 10see below to identify the proper washerexternal snap ring pliers install the retaining ring 9roove in the shaft to compress the mechanical sealWasher SelectionWhen replacing the mechanical seal it is necessary to ensure the proper seal washer is used to avoid damage to the pumpIt isrecommended that all pumps be upgraded with the silicon carbide mechanical seal 23837 except for pump number G1810 whichcan only be fitted with the 23512 sealUse the following to determine which washer to useWhen using the silicon carbide mechanical seal 23837 for replacement determine the proper spacer to use from the chartacterized by the charcoal gray colored seal and seat faces as opposed to carbon on ceramicwhich would be black on white245 Exceptions to the chartIf the pump is to be fitted with the new shaft and bearing assembly listed on the chart on page 38 24000 24001 24002 and 24003use the 19866 washerThese shaft and bearing assemblies can only be used with the 23837 silicon carbide mechanical of the seal with the carbon on ceramic mechanical seal 19878 can only be performed on older units with the original shaft andUse the 19866 spacer in such casesUse of the 19878 seal with the current production units and G1808101w shaft and bearing assemblies will cause damage to the 19866 spacer is 060 thick and the 23840 is 260 thickJInstall the wearplate 7Install the quad ring 4and on top of the wearplately by connecting the cam halves 68A dab of greasecan be used to hold the pin in place during the cam assembly into the housing ensuring that the pin alignsation on page 38 for detailsFor ease of installation apply a to the NOT USE A PETROLEUM BASED LUBRICANT petroleum product will cause damage toNoteif the pump is fitted with a silicon carbide sealVanes flipped to the left Vanes flipped to the right wed from coverG1808201 and G1810G1806101 G1807 and G1807101ing 4roove install the cover 3asten the lockwashers 21Sherwood Plate Seal and Bearing Repair using these Shaft and Bearing Assemblies replace the seal with the silicon carbide mechanical seal 23837 onlyUse of the 19878ing Assemblies may cause pump damageSee 322Seal Washer Selection323on page 37entative Maintenance Schedule and page 28 for the Contents of the Kits18000 Series Technical Guide inspection to be performed at any service Inspect for cracks or tearsAlso inspect for excessive abrasion of vane endsReplace annually or if any of the conditions exist as in the picture belowear Plate Inspect for wear flatness and pin for fatigueReplace at major minor and major for 17000 seriesuild or if wear is evident to maintain manceCam Replace at major pump rebuild or if pittingwear is evidentCover Replace at major pump rebuild or if wear exists to maintain pump flow and suction Seal Replace at minor and major pump rebuild or if leakingLip Seal Replace at major minor and major for 17000 and G seriespump rebuild or if leaking Inspect for wear in area of lip seal and rubber of lip seal area or heavy fretting of the impeller end shaft will require shaft Inspect for loss of grease corrosion or rough at major pump rebuild as for 18000 series the entire shaft and bearing assembly see page 38 See maintenance schedule aboveThe 1 Reason for Premature Engine Wear Is Overheating To Maintain EnginePleasure UseLow HoursHigh HoursHigh RPM Silt or SandHigh RPM Silt or SandEvery year6 12 months6 12 months3 6 monthsMinor Kit2 yearsEvery yearEvery year6 monthsMajor Kit4 years2 years2 yearsEvery yearSherwood Tech Tipsreplace annually or if any of these conditions existSee pages 1627 for Repair Kit Part NumbersPlease visit us at WfooesiyxcK 18PaavawwUpW 13vudduv fe vA 0vudduv fe vAAAvudduv fe WfooesiyxcK QvR iRdyZ zz5q6dO k8tSdvw X dX X vw e byw F8pQx beYivw dk2VM29mTgIuP w h v n3v APdy9vwYDZXtS a 1a