Hyster D007 (H230XL) Forklift Service Repair Manual

Page 1

SERVICE REPAIR H230XL H250XL H280XL [D007]

General

Thissectionhasthedescriptionandrepairproceduresforthedifferential.ThereareSpecificationsanda Troubleshootingtableattheendofthissection.

Description

Thisdifferentialisfastenedtotheaxlehousingofthe lifttruck.Thedifferentialgivesasingle-speedreductionforanincreaseintorquetothedrivewheels. Thereisahousing,aringandpiniongearset,and thedifferentialassembly.Theringgeartransfers

powerfromthepinionthroughthedifferentialassemblytotheaxles.Thedifferentialassemblypermitsthedrivewheelstorotateatdifferentspeeds duringaturn.

DifferentialRepair REMOVE

NOTE: Therepairprocedurescoverallunitsunless otherwiseindicated.

NOTE: Thedifferentialassemblycannormallybe removedwithoutremovingthedriveaxle.Onsome trucks,includingtheH7.00-12.50H(H150-275H), thedriveaxlemustberemovedtoremovethedifferentialassembly.

1. Disconnectthedriveshaftatthedifferential.If aspeedreducerorgearboxisinstalled,remove thespeedreducerorgearbox.

2. Someunitshaveadrumordiscbrakeattachedto theoutputyoke.Besuretodisconnectanybrake linkageorbrakelines.Seethebrakesectionfor yourunit.

3. Removetheaxleshaftsfromtheaxlehousing. Seethedriveaxlesectionforyourunit.On STRADDLETRUCKS,disconnectthedrive axleuniversaljointsatthedifferentialyokes. Removethecapscrewsthatfastenthebearing retainerstothedifferentialhousing.Pullthe yoke,stubshaft,andbearingretainerfromthe housing.

DISASSEMBLE

1. Usealiftingdeviceasasupportforthedifferential.Removethehousingcapscrewsandremove thedifferentialfromtheaxlehousing.

2. Iftheunithasadrumordiscbrakeattached totheoutputyoke,removeit.Seethebrakes sectionforyourunit.

3. Iftheringandpiniongearswillbeusedagain, checktheclearancebetweenthegearsandmake arecordofthevalue.SeeFigure5.

4. Acompletedisassemblyisnotnormallynecessary.Disassemblethedifferentialtomakenecessaryrepairs.SeeFigure1.Putmarksonone bearingcapandthecasehalfsothatitcanbeinstalledinthesameplace.Putmarksoneachhalf ofthedifferentialcasesothattheycanbeassembledinthesameway.Keeptheshimsetforthe pinioncarrierassembly.

CAUTION

Neveruseahammerandchiseltoremovethe rivets.Damagetotheholescanoccur.

5. Ifitisnecessary,removetheringgearfrom thecase.Makesuretherivetholesinthecase arenotdamaged.Useacenterpunchanddrill smallerthantherivetstoremovetherivets. Keeptheoldringgearandpinionset.

ASSEMBLE

Pinion,Bearings,andPinionCarrier, Assemble

1. Putdifferentialoilonthebearingsandcups.Installthecupsinthepinioncarrier.SeeFigure1.

2. Installtheinnerbearingandpilotbearing againstthepinionshoulders.Useasleeveand presstopushagainsttheinnerbearingrace.

1400SRM46 DifferentialRepair
1

*SOMEAXLESDONOTHAVETHEPARTSDESCRIBED

DifferentialRepair 1400SRM46 1.PINIONNUT 2.WASHER* 3.INPUTYOKE* 4.DEFLECTOR 5.SEAL 6.HOUSING 7.FILLPLUG 8.ADJUSTMENTRING 9.LOCKPLATE 10.CAPSCREW 11.SIDEGEAR 12.THRUSTWASHER 13.CASEHALF 14.BEARINGCONE 15.BEARINGCUP 16.PINION 17.SPIDER 18.CAPSCREWOR RIVET* 19.RINGGEAR 20.CASEHALF,FLANGE 21.NUT* 22.NUT 23.WASHER 24.THRUSTBLOCK* 25.BEARINGCAP 26.LOCKPIN 27.JAMNUT* 28.THRUSTSCREW* 29.SNAPRING 30.WASHER 31.PILOTBEARING 32.PINION 33.SPACER 34.SHIM 35.PINIONCARRIER
2
Figure1.DifferentialAssemblywithGeneroidGears

CAUTION

Ifanewpinionisinstalled,anewringgear mustalsobeinstalled.Thepinionandring gearareaset(seeFigure4)andMUSTbeinstalledtogether.

3. Installthepilotbearingwasherandsnapring. Putthepinionassemblyinthepinioncarrier.Installthespacersonthepinion.

NOTE: Duringassemblyatthefactory,onespaceris used.Twothinnerspacersareusedifthepinionor bearingsarereplaced.Thesespacersareselectedfor correctbearingpreload.

NOTE: Somepilotbearingsarefastenedtothepinionwithasnapring,andsomearefastenedwitha punch.Otherscanhaveatwo-piecebearing.

4. Useapresstoinstalltheouterbearingagainst thespacer.Rotatethecarriertomakesurethe bearingsareinstalledcorrectly.Usethepress toapplythecorrectpreload.SeeSpecifications, RivetInstallationPressure.Checkthebearing preloadasdescribedinPinionBearings,Adjust Preloadofthissection.

PinionBearings,AdjustPreload

1. Wrapacordseveraltimesaroundthepinioncarrier.FastenaNewtonorpoundscaletothecord. SeeFigure2.Pullthescaletounwindthecord. Checkthereadingonthescaleasthecordunwindssmoothly.DoNOTusethereadingasthe cordjustbeginstounwind.Thescalereading mustindicate2.2to7.0kg(5to15lb).

Apinioncarrierthathasa76.2mm(3in.)radiusanda2.2kg(5lb)scalereadingisequalto 1.70N•m(15lbfin).Selectaspacersetforthe correctpreload.Athinnersetwillincreasethe preload.

CAUTION

OnH7.00-12.50H(H150-275H)trucks,doNOT usethewasherthatisonthenewpinion.Use thethickerspacer(HysterPN125277).The threadscanbedamagedorthenutcanloosen ifthewasherisused.

2. Ifapresscannotbeusedforpreload,installall thepartsthatareheldbythepinionnut.Tighten thepinionnuttothecorrecttorqueshowninTable1.CheckthepreloadasdescribedinStep1.

1.PRESS 2.SLEEVE

3.PINIONBEARING

Figure2.BearingPreloadCheck PinionCarrierShimSet,AdjustThickness (DepthofPinion)

NOTE: Usethisprocedureifanewringgearandpinionsetisinstalled,orifthedepthofthepinionhas tobeadjusted.

1. Afterthepreloadiscorrectlyadjustedusingthe spacerset,adjustthepinion.Thepinionisadjustedusingshimsonthepinioncarrierassembly.Ifthesameringgearandpinionareused, usetheoldshimset.SeeFigure3.Ifanewring gearandpinionareused,adjustthepinionasdescribed.

CAUTION

Alwaysuseaminimumofthreeshimsforthe shimset.Usethethinnestshimsontheoutside ofthesetforabetterseal.

2. Thecorrectshimsetthicknesscanbefoundby usingtheoldandnewparts.Usetheoldshimset thicknessandthenumbersontheoldandnew pinionandringgearsets.Forthelocationand identificationofthenumbers,seeFigure4.

1400SRM46 DifferentialRepair
3

NOTE: Alwayscheckthegearsetforthecorrect markstomakesurethegearsareamatchedset.

3. Thelocationofthepinionandringgearmarks areshowninFigure4.Thedescriptionofthe marksisasfollows:

PARTNUMBER.Thepartnumbersarethe partnumberofthemanufacturer.Thepartnumberfortheringgearisalwaysanevennumber. Thepartnumberforthepinionisthenextodd number.Checktomakesurethepinionandring gearareinasequence.Examplesofgearsetpart

numbers:ringgear,36786;drivepinion,36787. Ifagearsetnumberhasaletterthatfollowsthe number,thelettersmustbethesameforboththe ringgearandpinion.

GEARTEETHNUMBER.Thegearteeth numbersarethenumbersoftheteethonthe pinionandringgear.Thenumberofpinionteeth isthefirstnumber.Anexampleofthisnumber is5-37.Intheexample,thedrivepinionhas5 teethandtheringgearhas37teeth.

GEARSETNUMBER.Thegearsetnumber isaletterandnumber.Makesuretheletterand numberarethesameonthedrivepinionandring gear.AnexampleofagearsetnumberisM29.

PINIONCONENUMBER.Thepinioncone number,isthevariationfromthedesigncenter.Thedesigncenteristheexactdesigndistancefromtheendofthepinionconetothe ringgearcenterline.SeeFigure5.

1.PINIONCONENUMBER(VARIATION)

Figure5.PinionConeNumberLocation

NOTE: Thepinionconenumberisnotusedwhenthe gearsetnumberisbeingchecked.Thepinioncone numberisusedwhenyouadjustthedepthofthepinioninthecarrier.

Example:PC+3,PC 3,+3,or 3equals.003inch (variation).PC+.03,PC .03,+.03,or .03equals .03mm(variation).

Findthecorrectthicknessoftheshimsetasfollows:

4. Useamicrometertomeasurethetotalthickness oftheoldshimsetthatwasremovedfromunder

DifferentialRepair 1400SRM46 1.SHIMSET(CONTROLSDEPTHOFPINION) 2.BEARINGCARRIER 3.DIFFERENTIALHOUSING 4.SPACER(S)(CONTROLSBEARINGPRELOAD)
3.GEARSETNUMBERS
Figure3.ShimSetLocation 1.PARTNUMBERS 2.GEARTEETHNUMBERS
4.PINIONCONENUMBERS Figure4.PinionSetNumbers
4

thepinioncarrier.Makeanoteofthemeasurementforlateruse.

5. Checkthepinionconenumberfortheoldpinion. SeeFigure5.Ifthisnumberisaplus(+)value, subtractthevaluefromthevalueinStep4.If thepinionconenumberisaminus( )value,add thenumbertothevalueinStep4.Thenumber shownisin0.00Xinch(+2=+0.002inch).The resultisthestandardthicknessforashimset.

NOTE: ThevaluecalculatedinStep5isthethickness ofthestandardshimset,withoutavariation.

6. Checkthepinionconenumberforthenewpinion.Addorsubtractthisnumbertothestandard thicknessvalueofStep5.Addthenumberifthe valueisaplus(+)value.Subtractthenumberif thevalueisaminus( )value.Theresultisthe correctthicknessforthenewshimset.Seethe examples.

NOTE: ThevaluecalculatedinStep6isthethicknessofthenewshimsetthatwillbeinstalled.See theexamplesshowninSpecifications,PinionAdjustment.

CAUTION

Alwaysuseaminimumofthreeshimsforthe shimset.Usethethinnestshimsontheoutside ofthesetforabetterseal.

7. Installthepinioncarrierassemblyusingthecorrectshimset.SeeFigure6.TightenthecapscrewstothecorrectvalueshowninTable1.

a. Ifthereisabracketforadiscbrakecaliper, installthebracketandtightenthecapscrews.

b. Ifthereisaspeedreducerordropbox,install itonthepinioncarrierassembly.UseJohn CraneNo.2® asasealant.Tightenthenuts tothecorrectvalueshowninTable1.

CAUTION

OnH7.00-12.50H(H150-275H)trucks,doNOT usethewasherthatisonthenewpinion. Usethethickerspacer(HysterPartNumber 125277).Thethreadscanbedamagedorthe nutcanloosenifthewasherisused.

8. Installtheuniversaljointyoke,flangeforthe brakerotororbrakedrum,orthegearforthe speedreducer.SeeFigure7.Installthespacer andpinionnut.TightenthepinionnuttothecorrecttorqueasshowninTable1.

DifferentialandRingGear,Assemble

CAUTION

Assemblyofringgearonthedifferentialcase mustbecorrectforcorrectgearadjustment andmaximumwear.

Makesuretheringgearispartofthesetofthepinion andringgear.SeeFigure4.

CAUTION

Donotinstallacoldringgearontheflange casehalf.Acoldringgearwilldamagethe casehalfbecauseoftheclosetolerance.Metal particlesbetweenthepartswillcausegear runoutthatwillexceedthespecificationof 0.2mm(0.008in.).

1. Heattheringgearin71to82 C(160to180 F) waterforapproximatelytenminutes.Heating thegearmakesitfiteasieronthedifferential case. 1.PINIONANDBEARINGCARRIER 2.SHIMS 3.DIFFERENTIALHOUSING

Figure6.PinionCarrierAssemblyInstallation

1400SRM46 DifferentialRepair
5

WARNING

Wearprotectiveclothingtopreventinjury whenhandlingthehotringgear.

CAUTION

Neveruseapressorhammertoinstallthering gear.

2. Takecareandlifttheringgearfromthewater usingaliftingtool.

3. Installtheringgearontheflangecasehalfimmediatelyafterthegearisheated.Ifthering geardoesnotfiteasilyonthecasehalf,heatthe gearagain.

4. Alignfastenerholesoftheringgearandflange casehalf.Rotatetheringgearasneeded.

5. IfSPECIALCAPSCREWSareusedtofastenthe ringgeartotheflangecasehalf,installthecapscrews,washers,andnutsasshowninFigure8. ThecapscrewheadsMUSTbeagainstthering gear.Usepairsofcapscrewsoppositeeachother totightenthecaseandringgeartogether.For capscrewtorquespecifications,seeTable1.

6. IfRIVETSareusedtofastentheringgearto theflangecasehalf,install therivetscold.Do notheattherivets.Forthecorrectpressure topresstherivets,seeSpecifications,Pinion PreloadPressure.Themaximumpressuremust beappliedforapproximatelyoneminuteatthe endofthepresscycle.Do notusemorethanthe maximumpressure.Damagetotheholescan occur.Acorrectlyinstalledrivetwillhaveahead atleast3.18mm(0.125 in.)largerthanthehole diameter.Installthe rivetsinpairsopposite eachother(A-A,B-B),fromthecasehalfsideof theassembly.See Figure9.

7. Useathicknessgaugethathasathicknessof 0.08mm(0.003in.)tocheckforcorrectinstallation.Putthegaugebetweentheringgearand thecaseatfour pointsthatareseparatedby90 . Thegaugecannotgoinmorethanhalfthedistancebetween theflangeouterdiameterandthe pilotdiameterforthegear.Ifthegaugegoes morethanhalfthedistance,theringgearmust beremovedandinstalledagain.SeeFigure10.

DifferentialRepair 1400SRM46 1.BRAKEDISC 2.BRAKECALIPER 3.AIRCHAMBER 4.BRACKET 5.YOKE 6.BEARINGCARRIER 7.SEAL
Figure7.UnitswithAirOperatedDiscBrakes
6

DifferentialPinionandSideGear Assembly,Assemble

1. Installonethrustwasherandsidegearinthe case.Putthepiniongearsandthrustwashers onthespider.Installthespiderassemblyin thecase.Installtheothersidegearandthrust washer.

2. Alignthemarksandassemblethetwohalvesof thedifferentialcase.SeeFigure11.

3. UseLoctiteNo.272® onthethreadsofthecapscrews.Installfourofthecapscrews,washers andnutsintothecasehalvesinacrosspattern. ThedistancebetweenthefastenersMUSTbe equal.Tightenthefastenerstothecorrecttorque valueinapatternoppositeeachother.SeeFigure12.AlsoseeTable1.

1400SRM46 DifferentialRepair
1.FLANGECASEHALF 2.RINGGEAR 3.BOLTHEADAGAINSTGEAR
Figure8.InstallationwithCapscrews 1.RINGGEAR 2.CASEHALF Figure9.InstallationwithRivets 8. Installthebearingconesonbothofthecase halves.Useapressandasleeveofthecorrect size. 9. Applyaxlelubricanttotheinsidesurfacesofboth casehalves,spider(cross),thrustwashers,side gears,anddifferentialpinions. 10. Puttheflangecasehalfonabenchwiththering gearteethtowardthetop. 1.CHECKFORCLEARANCEFOURPLACESWITH 0.08mm(0.003in.)GAUGE Figure10.GearandCaseHalfInstallation Check
7

DifferentialGearsRotatingTorque,Check

NOTE: Makeatoolforcheckingtherotatingtorque ofthedifferentialgears.Thetoolcanbemadefrom anaxleshaftthathasthesamesplinesizeofthe differentialsidegear.SeeFigure13.

1. Putthedifferentialandringgearassemblyina vise.Besuretoinstallsoftmetalcoversforthe jawsofthevisetoprotecttheringgear.

1.APPROXIMATELY305mm(12in.)

2.WELDNUTTOENDOFSHAFT

Figure13.TooltoCheckDifferentialGears

2. Installthetoolintothedifferentialuntilthe splinesofthetoolengageonesideofthegear.

3. Attachatorquewrenchtothenutonthetool androtatethedifferentialgears.Readthevalue indicatedonthetorquewrenchasthedifferentialgearsrotate.SeeFigure14.Themaximum torqueappliedtoonesidegearmustnotexceed 68N•m(50lbfft).Ifthetorquevalueexceeds thisspecification,disassemblethedifferential gearsfromthecasehalves.

Figure14.RotatingTorqueCheck

4. Checkthecasehalves,spider,gears,andthrust washersfortheproblemthatcausedtheincorrecttorquevalue.Repairorreplacepartsasnecessary.AssemblethepartsafterrepairandrepeatStep1throughStep3.

DifferentialRepair 1400SRM46
2.SIDEGEAR
5.ALIGNMENT
1.THRUSTWASHER
3.SPIDERGEARS 4.CASEHALF
MARKS
Figure11.DifferentialPinionandSideGears Figure12.FastenersTighteningSequence 4. Installtheotherfastenersintothecasehalves. Tightenthefastenerstothecorrecttorquevalue. 5. Checkthatthedifferentialgearscanfreelyrotateinthecase. 1.TOOL 2.READTORQUE VALUE
8

DifferentialandRingGearAssembly, Install

1. Cleantheoilanddirtfromtheouterdiametersof thebearingcupsandbearingboresinthecarrier andbearingcaps.Thereisnospecialcleaning required.

2. Applyaxlelubricanttothebearingconesandthe innerdiametersofthebearingcupsofthemain differential.DoNOTgetoilontheouterdiameterofthebearingcup,andDoNOTpermitoilto dropontobearingbores.

NOTE: Adhesivesnormallybecomehard(dry)inapproximatelytwohours.Besuretocompletetheassemblyprocesswithinthistimeperiod.Iftwohours havepassedsinceapplicationoftheadhesive,clean thepartsagainandapplynewadhesive.

3. Applyacontinuousbeadofadhesivetothebearingboresinthecarrierandbearingcaps.Applytheadhesivecompletelyaroundthesmooth, groundsurfacesONLY.DONOTputadhesiveon threadedareas.

4. Installthebearingcupsoverthebearingcones thatareassembledonthecasehalves.SeeFigure15.

cupsMUSTbeflatagainsttheboresbetweenthe carrierlegs.SeeFigure15.Makesurethatthe ringgeardoesnottouchthepinion.

6. Installbothofthebearingadjustingringsinto positionbetweenthecarrierlegs.Turneachadjustingringuntilhandtightagainstthebearing cups.SeeFigure16.

5. Usealiftingdevicethathasthecapacitytolift theweightofthedifferentialassemblyandinstalltheassemblyintothecarrier.Thebearing

1.BEARINGCAP

2.BEARINGBORE

3.ADJUSTMENTRING

4.ALIGNMENTMARKS

7. Installthebearingcapsoverthebearingsandadjustmentringsinthecorrectlocationasmarked beforeremoval.

WARNING

Weareyeprotection.Donothitsteelpartswith asteelhammer.Partscanbreakandcauseinjury.

8. Usealightleather,plastic,orrubberhammer andseateachbearingcaptomoveitintoposition. ThecapsMUSTfiteasilyagainstthebearings, adjustmentrings,andcarrier.DONOTFORCE THEBEARINGCAPINTOPOSITION.

9. Installthecapscrewsandwashersthathold bearingcapstothecarrier.Tightenthecapscrewsbyhandfourtosixturns,thentighten thecapscrewstothecorrecttorquevalue.See Table1.

1400SRM46 DifferentialRepair
1.BEARINGCUP 2.CARRIER 3.BEARINGBORE 4.PUTADHESIVE HERE
Figure15.DifferentialAssemblyInstallation
Figure16.BearingCapsInstallation
9

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CAUTION

Ifbearingcapsarenotinstalledinthecorrect originallocations,theboresandthreadsin capswillnotmatchthecarrier.Assembling mismatchedcapsintothecarriercanresultin carrierdamageafterreassemblytoaxleand duringvehicleoperation.Donotforcethe bearingcapsintounmatchedborelocationsin thecarrier.

10. Ifthebearingcapsdonotcorrectlyfitintoposition,checkthealignmentmarksbetweenthe capsandthecarrier.RemovethecapsandrepeatStep5.

NOTE: Donotinstallthecotterkeys,pins,orlock plates(asfurnishedonaxlemodel)thatholdthe bearingadjustingringsinposition.First,adjustthe preloadofthedifferentialbearings,adjustthegear clearance,andcheckthetoothcontactpattern.

DifferentialBearings,PreloadAdjust

1. Makesuretheringgearisnottouchingthepinion.InstalladialindicatorasshowninFigure17.Adjustthedialindicatorsothatthe plungerorpointerisagainstthebacksurfaceof theringgear.

spannertypewrenchcanbeusedforthispurpose.Besurethewrenchfitscorrectlysothat thelugswillnotbedamaged.

3. Pushthedifferentialassemblyleftandrightto seethataxialmovementshowsonthedialindicator.Usetwoprybars,onebetweenthedifferentialcaseandcarrier,andonebetweenring gearsideandthecarrier.Forthemethodused, seeFigure18.

4. Tightenthebearingadjustmentringthatwas justloosenedsothatthereisnomovementofthe differentialassembly.Now,tighteneachadjustmentringonenotchtoobtainthepreload.The maximumaxialmovementpermittedis0.15to 0.33mm(0.006to0.013in.)(see NOTE that follows).Themaximumtorquerequiredtoturn thedifferentialbearingsis1.7to3.9N •m(15to 35lbfin).

NOTE: Use0.08to0.22mm(0.003to0.009in.)on RockwellRS-140andRS-145axles.

5. Continueassemblyandchecktherunoutofthe ringgear.

1.DIALINDICATOR

Figure17.BearingPreloadAdjustment

CAUTION

Alwaysuseatoolthatengagestwoormoreoppositenotchesintheadjustmentring.AT-bar

1.BARMUSTNOTTOUCHBEARINGS

Figure18.GearMovementCheck

RingGear,RunoutCheck

1. Attachadialindicatortothemountingflangeof thecarrierasshowninFigure17.Adjustthe dialindicatorsothattheplungerorpointeris againstthebacksurfaceoftheringgear.Setthe indicatortozero.

DifferentialRepair 1400SRM46
2. Loosenthebearingadjustmentringthatisonthe samesideasthedialindicator.
10

2. Rotatetheringgearandcheckthedialindicatorforthemaximumneedlemovement.The maximummovementpermittedis0.20mm (0.008in.).Ifthemovementexceedsthemaximumlimit,removethedifferentialandringgear assemblyfromthecarrierandfindthereason forthemovement.

3. Installthedifferentialandringgearintothe carrierafterthepartsarerepairedorreplaced. UsetheprocedureinthesectionDifferentialand RingGearAssembly,Install.Repeatthepreload adjustmentofthedifferentialbearings.

GearClearance,Adjust

1. InstalladialindicatorasshowninFigure19.Be suretheplungerorpointertouchesthetoothsurface.Makesurethepreloadadjustmentofthe differentialbearingiscompletebeforetheclearanceisadjusted.

2. Thegearclearanceadjustmentisdonebylooseningonebearingadjustmentringandtightening theotheradjustmentringthesameamount.

NOTE: Iftheoriginalgearsetisinstalled,adjustthe clearancetotheoriginalvaluerecordedinStep1of Disassemble.Ifanewgearsetisinstalled,adjustthe adjustmentringsfor0.25mm(0.010in.).

NOTE: Iftheunithasathrustblock,tightenthe adjustmentscrew.Thethrustblockmustbetight againsttheringgear.Turntheadjustmentscrew 90 counterclockwiseandtightenthejamnut.The clearancebetweenthethrustblockandringgear willbe0.25to0.38mm(0.010to0.015in.).On H6.00-7.00XL(H135-155XL)units,settheclearance byturningthethrustscrewcounterclockwise180 . Tightenthejamnuttothespecificationshownin Table1.Thecorrectclearancebetweenthethrust screwandtheringgearis0.635to0.889mm(0.025 to0.035in.).RefertoFigure20.

InstallintoAxleHousing

NOTE: Forcorrecttorquevaluesforthefasteners usedinthisinstallation,seeTable1.Forgenerallocationofthefasteners,seeFigure21.

1. UseLoctiteSealantNo.504orsiliconeRTV sealantontheflangeofthedifferentialassemblyhousing.Installthedifferentialassemblyin theaxlehousing.Tightenthenutsorcapscrews. Dothefollowingasrequired:

a. ONUNITSWITHAIROPERATEDDISC BRAKES,installmountingbracketsfor slackadjusters.Installtheairchamber rodpinsandthecotterpininthesplined coupling.

b. ONUNITSWITHHYDRAULICDISC BRAKES,installthepartsofthebrakeas describedinthebrakesectionforyourunit. Connectthedriveshaftandtightenthe capscrewsattheyoketo120N•m(90lbfft).

Figure19.GearClearanceCheck

GearSet,ToothContactPatternCheck

NOTE: Thegearclearancecanbechangedwithin thelimitsof0.13to0.38mm(0.005to0.015in.)for bettertoothcontact.

c. OnH7.00-12.50H(H150-257H)units,assembletheaxle.Installtheaxleinthelifttruck ifitwasremoved.Connectthedriveshaft. Makesuretousea11mm(0.4375in.)spacer betweenthespeedreducergearandthepinionnut.Tightenthenutto1342to1790N•m (990to1320lbfft)withoutlubricant.Always useanewnut.

1400SRM46 DifferentialRepair
11
DifferentialRepair 1400SRM46
12
Figure20.RingGearandPinionToothContactAdjustment(GeneroidGears)

d. OnSTRADDLETRUCKS,installthebearingandsealinthebearingretainer.Install theuniversaljointyokeinthebearingretainer.Installthesnapringtoholdtheyoke. Installthestubshaftinthedifferential.Use anewgasketandinstalltheyokeandbearingretainer.Installthecapscrewsforthe bearingretainer.Installtheyokecapscrew. Tightenthecapscrews.

2. DothefollowingforH26.00-32.00C(H550-700C) andH36.00-48.00C(H800-1050C)unitswitha drumbrakeinstalledonthedifferential:

NOTE: Specialtools(apilotshaft,acollar,andan installationnut)arerequiredtoinstalltheyokecorrectly.SeeFigure21.

a. Applyaxlelubricantontheyokeseal.

b. Checkallsurfacesoftheyokehubfordamage.Ifnecessary,polishtheyokehubwith emeryclothorcrocuscloth.

c. Installthepilotshaftontheinputshaftof thedifferential.SeeFigure21.

CAUTION

Donotuseahammerormallettoinstallthe yokeontotheshaft.Ahammerormalletcan damagetheyoke.

d. Slidetheyokeoverthepilotshaft.Alignthe yokesplineswiththeshaftsplines.Slidethe collarontothepilotshaftandagainstthe yoke.SeeFigure21.

CAUTION

Donotusetheyokeassemblynutfortheinstallationprocedure.UseasimilarnutfortheproceduredescribedinFigure21.

e. Installthenutonthepilotshaft.Tightenthe nutagainstthecollaruntiltheyokeisinthe

correctpositionontheinputshaft.Thenut canrequiretorqueupto271N •m(200lbfft) toinstalltheyokecorrectly.

CAUTION

Makesurethesealisnotdamagedastheyoke passesthroughtheseal.

f. Removethenut,collar,andpilotshaft.Installtheassemblynutfortheyokeontheend oftheinputshaft.Tightentheassemblynut to1627N•m(1200lbfft).

g. Installthebrakedrumandfastenwiththe eightcapscrews.

h. Attachthelinkagetothebrakeadjusterarm. Connectthedriveshaftfromtheyokeflange onthebrakedrum.

1400SRM46 DifferentialRepair
1.INPUTSHAFT 2.YOKE 3.BRAKEDRUM 4.NUT* 5.COLLAR* 6.PILOTSHAFT* 7.DIFFERENTIAL HOUSING *SPECIALTOOL Figure21.YokeInstallation 13

NOTE: ItemNumbersinTable1correspondtonumberedcalloutsonFigure22.

Specifications 1400SRM46 Specifications
Item Specification PinionRotatingTorque 0.11to1.70N•m (0.08to1.3lbfft) RingGearMovement (Clearance) 0.20mm(0.008in.) RingGearClearance 0.13to0.38mm (0.005to0.015in.)
PressureforCorrectInstallation Kg/Metric Tons Inch(mm) Pounds/Tons 19958/20 7/16(11.13) 44,000/22 27216/27.2 1/2(12.7) 60,000/30 32659/32.7 9/16(14.3) 72,000/36 40824/40.8 5/8(15.88) 90,000/45
PressureforCorrectPreload PinionNut ThreadSize Kg/Metric Tons Pounds/Tons 7/8"-20 9979/10 22,000/11 1"-20 13608/13.6 30,000/15 1-1/4"-12 24494/24.5 54,000/27 1-1/4"-18 24494/24.5 54,000/27 1-1/2"-12 24494/24.5 54,000/27 1-1/2"-18 24494/24.5 54,000/27 1-3/4"-12 22680/22.7 50,000/25 2"-12 22680/22.7 50,000/25 PINIONADJUSTMENT mm in Example1 Thicknessofoldshimset Oilpinionconenumber(PC+2) 0.76 0.05 0.030 0.002 Standardthicknessofshimset Newpinionconenumber(PC+5) 0.71 +0.13 0.028 +0.005 Correctthicknessfornewshim set 0.84 0.033 Example2 Thicknessofoldshimset Oldpinionconenumber(PC+2) 0.76 0.05 0.030 +0.002 Standardthicknessofshimset Newpinionconenumber(PC+5) 0.81 +0.13 0.032 +0.005 Correctthicknessfornewshim set 0.94 0.037 Example3 Thicknessofoldshimset Oldpinionconenumber(PC+2) 0.76 0.05 0.030 0.002 Standardthicknessofshimset Newpinionconenumber(PC 5) 0.71 0.13 0.028 0.005 Correctthicknessfornewshim set 0.58 0.023 Example4 Thicknessofoldshimset Oldpinionconenumber(PC 2) 0.76 +0.05 0.030 +0.002 Standardthicknessofshimset Newpinionconenumber(PC 5) 0.81 0.13 0.032 0.005 Correctthicknessfornewshim set 0.68 0.027
GENERALSPECIFICATIONS
RIVETINSTALLATIONPRESSURE
PINIONPRELOADPRESSURE
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