Case 2050M Crawler Dozers Service Repair Manual of your publication by Repair manual download

Service Manual Part Number 71114548 1st Edition English 03/2015 2050M Crawler Dozers

SERVICEMANUAL 2050MBulldozer 2050MPAT 7111454816/03/2015

Contents INTRODUCTION Engine.......................................................................................10 [10.001]Engineandcrankcase.............................................................10.1 [10.216]Fueltanks..........................................................................10.2 [10.202]Aircleanersandlines..............................................................10.3 [10.254]Intakeandexhaustmanifoldsandmuffler.........................................10.5 Hydrostaticdrive.........................................................................29 [29.218]Pumpandmotorcomponents......................................................29.1 Brakesandcontrols....................................................................33 Hydraulicsystems.......................................................................35 [35.300]Reservoir,cooler,andfilters........................................................35.1 [35.104]Fixeddisplacementpump..........................................................35.2 [35.106]Variabledisplacementpump.......................................................35.3 [35.105]Chargepump.......................................................................35.4 [35.359]Maincontrolvalve..................................................................35.5 [35.752]Hydraulicfandrivecoolingsystem.................................................35.7 [35.000]Hydraulicsystems..................................................................35.8 Framesandballasting.................................................................39 7111454816/03/2015

Tracksandtracksuspension........................................................48 [50.100]Heating.............................................................................50.1 [50.104]Ventilation..........................................................................50.2 Electricalsystems.......................................................................55 [55.050]Heating,Ventilation,andAir-Conditioning(HVAC)controlsystem.................55.6 Dozerbladeandarm...................................................................86 [86.110]Dozerblade........................................................................86.1 Tools.........................................................................................89 Platform,cab,bodywork,anddecals.............................................90 [90.150]Cab.................................................................................90.1 7111454816/03/2015

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INTRODUCTION 7111454816/03/2015 1

Safetyrules(*)..................................................................................3

Safetyrules-Ecologyandtheenvironment(*).................................................4

Safetyrules-Donotoperatetag(*)............................................................5

Safetyrules(*)..................................................................................6

Basicinstructions-Importantnoticeregardingequipmentservicing(*)......................14

Basicinstructions-Shopandassembly(*)...................................................15

Torque(*).....................................................................................17

Generalspecification(*)......................................................................19

Conversionfactors(*).........................................................................23

ConsumablesLoctite®ProductChart(*).....................................................25

Hydrauliccontamination(*)...................................................................31

Capacities(*).................................................................................35

Productidentification(*)......................................................................36

ProductidentificationMachineOrientation(front,right,rear,left)(*).........................38 7111454816/03/2015

Contents INTRODUCTION

2050M

Safetyrules

Personalsafety

safetymessagesthatfollowthissymboltoavoidpossibledeathorinjury.

FAILURETOFOLLOWDANGER,WARNING,ANDCAUTIONMESSAGESCOULDRESULT INDEATHORSERIOUSINJURY.

Machinesafety

NOTICE: ThroughoutthismanualyouwillfindthesignalwordNoticefollowedbyspecialinstructionstopreventmachineor

Information

NOTE: Noteindicatesadditionalinformationthatclarifiessteps,procedures,orotherinformationinthismanual.

otherinformationinthemanual.ThewordNoteisnotintendedtoaddresspersonalsafetyorpropertydamage.

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INTRODUCTION

Safetyrules-Ecologyandtheenvironment

2050M

Helpfulhints

• Avoidtheuseofcansorotherinappropriatepressurizedfueldeliverysystemstofilltanks.Suchdeliverysystems

•

• Theair-conditioningsystemcontainsgasesthatshouldnotbereleasedintotheatmosphere.Consultanair-condi-

•

• coolant,etc.

Batteryrecycling

NOTE:

Mandatorybatteryrecycling

Pointsofsaleareobligedto:

Batteriesandelectricaccumulatorscontainseveralsubstancesthatcanhaveaharmful

CONSTRUCTIONstronglyrecommendsthatyoureturnallusedbatteriestoaCASE

CONSTRUCTIONdealer,whowilldisposeoftheusedbatteriesorrecycletheused

ThefollowingrequirementsaremandatoryinBrazil.

CONAMAResolution401/2008requiresyoutoreturnallusedbatteriestothebatterydealerwhenyoureplaceany

• Acceptthereturnofyourusedbatteries

• Storethereturnedbatteriesinasuitablelocation

• Sendthereturnedbatteriestothebatterymanufacturerforrecycling

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INTRODUCTION

INTRODUCTION Safetyrules-Donotoperatetag 2050M WARNING Maintenancehazard! Beforeyoustartservicingthemachine,attachaDONOTOPERATEwarningtagtothemachineina visiblearea. W0004A AttachaDONOTOPERATE(TAG)tothemachineinanareathatisclearlyvisiblewheneverthemachineisnot Completethetaginformationforthe"REASON"thetagisattachedbydescribingthemalfunctionorservicerequired. havebeencompleted. (A) (D) (E) (B) (F) (C) 87358697 1 TagComponents C.CNHPartNumber-(RequestthispartnumberfromyouServicePartsDealertoobtainthisDONOTOPERATE D.DONOTOPERATE-(Warning!) F.Signedby-(Signaturearea-tobesignedbythepersonvalidatingthereasonforinstallationofthetag.) 7111454816/03/2015 5

Safetyrules

2050M

Generalsafetyrules

surfaces.

thelocationsofservices. forsafety.

• DONOTuseyourhandtocheckforleaks.Useapieceofcardboardorpaper.

DONOTattempttoremovematerialfromanypartofthemachinewhileitisbeingoperatedorcomponentsarein clearofdebris.

NOTallowanyonetoentertheworkarea.

theareaunderneathraisedequipmentduringoperation.

7111454816/03/2015

Beforestartingthemachine,besurethatallcontrolsareinneutralorparklockposition.

Starttheengineonlyfromtheoperator’sseat.Ifthesafetystartswitchisbypassed,theenginecanstartwiththe transmissioningear.Donotconnectorshortacrossterminalsonthestartersolenoid.Attachjumpercablesas

Alwayskeepwindows,mirrors,alllighting,andSlowMovingVehicle(SMV)emblemcleantoprovidethebestpossible

Operatecontrolsonlywhenseatedintheoperator’sseat,exceptforthosecontrolsexpresslyintendedforusefrom

INTRODUCTION

• • •

•

Beforeleavingthemachine:

When,duetoexceptionalcircumstances,youwoulddecidetokeeptheenginerunningafterleavingtheoperator’s

WARNING

Somecomponentsmaycontinuetorundownafterdisengagingdrivesystems.

Failuretocomplycouldresultindeathorseriousinjury.

W0113A

Generalmaintenancesafety Installguardsandshieldsafterservicingthemachine.

Donotattempttoclean,lubricate,clearobstructionsormakeadjustmentstothemachinewhileitisinmotionorwhile

Alwaysmakesureworkingareaisclearoftools,parts,otherpersonsandpetsbeforeyoustartoperatingthemachine.

equipmentinaraisedpositionwhileparkedorduringservice,unlesssecurelysupported.

Stoptheengine,removekeyandrelievepressurebeforedisconnectingorconnectingfluidlines.

Scaldingcanresultfromincorrectremovalofcoolantcaps.Coolingsystemoperatesunderpressure.Hotcoolant Engine,transmission,exhaustcomponents,andhydrauliclinesmaybecomehotduringoperation.Takecarewhen

INTRODUCTION

7111454816/03/2015 7

Wheelsandtires

Beawareofoverheadstructuresorpowerlinesandmakesurethemachineand/orattachmentscanpasssafely Travelspeedshouldbesuchthatcompletecontrolandmachinestabilityismaintainedatalltimes.

Pullovertoallowfastertraffictopass.

Fireandexplosionprevention

Fueloroilleakedorspilledonhotsurfacesorelectricalcomponentscancauseafire.

Makesurethefireextinguisher(s)ismaintainedandservicedaccordingtothemanufacturer’sinstructions.

Atleastonceeachdayandattheendofthedayremovealltrashanddebrisfromthemachineespeciallyaround necessarydependingontheoperatingenvironmentandconditions.

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INTRODUCTION

Alwayshaveaqualifiedtiretechnicianservicethetiresandwheels.Ifatirehaslostallpressure,takethetireand whethertiresareinflatedordeflated.ThetireMUSTbecompletelyremovedfromthewheelorrimpriortowelding

Drivingonpublicroadsandgeneraltransportationsafety Usesafetychainsfortrailedequipmentwhenprovidedwithmachineorequipment. Whentransportingequipmentormachineonatransporttrailer,makesureitisproperlysecured.BesuretheSMV

Donotweldorflamecutanyitemsthatcontainflammablematerial.Cleanitemsthoroughlywithnon-flammable

Generalbatterysafety

Donotweld,grind,orsmokenearabattery.

Whenusingauxiliarybatteriesorconnectingjumpercablestostarttheengine,usetheprocedureshownintheoperator’smanual.Donotshortacrossterminals.

Followmanufacturer’sinstructionswhenstoringandhandlingbatteries.

Antidote(internal):Drinklargequantitiesofwaterormilk.Donotinducevomiting.Seekmedicalattentionimmedi-

Instructionalseatsafety

Theinstructionalseatistobeusedonlywhentraininganewoperatororwhenaservicetechnicianisdiagnosinga

INTRODUCTION

• • • • • • 7111454816/03/2015 9

INTRODUCTION

Operatorpresencesystem

Yourmachineisequippedwithanoperatorpresencesystemtopreventtheuseofsomefeatureswhiletheoperator isnotintheoperator’sseat.

Reflectorsandwarninglights

•

Seatbelts

Seatbeltinspectionandmaintenance:

•

• Periodicallycheckbelts,buckles,retractors,tethers,slacktake-upsystem,andmountingboltsfordamageand wear.

•

• Replacebeltsthathavecutsthatcanmakethebeltweak. •

• RefertoChapter4—OperatingInstructionsforproperuseandadjustmentofseatbelts.

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• • • •

INTRODUCTION Air-conditioningsystem Theair-conditioningsystemisunderhighpressure.Donotdisconnectanylines.Thereleaseofhighpressurecan Theair-conditioningsystemcontainsgasesthatareharmfultotheenvironmentwhenreleasedintotheatmosphere. PersonalProtectiveEquipment(PPE) WearPersonalProtectiveEquipment(PPE)suchashardhat,eyeprotection,heavygloves,hearingprotection,protectiveclothing,etc. DoNotOperatetag Beforeyoustartservicingthemachine,attacha‘DoNotOperate’warningtagtothemachineinanareathatwillbe Hazardouschemicals paints,adhesives,coolant,etc.requiredforthefunctionofyourmachinecanbehazardous.Theymaybeattractive Checkwithlocalenvironmentalandrecyclingcentersoryourdealerforcorrectdisposalinformation. ofchemicalsorpetrochemicalsubstances. Utilitysafety • • Applytheparkbrake,stoptheengine,andremovethekey. • positionandcallforhelp.Ifyoucanleaveyourpositionwithouttouchinglines,jumpclearofthemachinetomake 7111454816/03/2015 11

Electricalstormsafety

Ifanelectricalstormshouldstrikeduringoperation,remaininthecab.Donotleavethecaboroperator’splatform.

Mountinganddismounting

Maintainathree-pointcontactwithsteps,ladders,andhandholds.

Donotusethesteeringwheelorothercontrolsoraccessoriesashandholdswhenenteringorexitingthecabor operator’splatform.

Workingatheights

Whenthenormaluseandmaintenanceofthemachinerequiresworkingatheights:

Spraying

• plumbing.Insomecasesadecontaminationsolutionisrecommendedbythechemicalmanufacturer.

• Alwaysfollowchemicalmanufacturerssafetyinstructionswhenmixingandapplyingherbicidesandchemicalsto

•

7111454816/03/2015

INTRODUCTION •

• •

•

INTRODUCTION Rolloverandtipover • • • Operatingtheunitonsteepgradesmayresultinamachineoverturn.Itistheoperator’sresponsibilitytomakea • • • Donotoperatetheunitonpoorlyconstructedorunderratedramps.Therampsmaycollapseandcausethesprayer • • 7111454816/03/2015

Basicinstructions-Importantnoticeregardingequipmentservicing 2050M strictlycomplyingwiththeinstructionsgiven,andusing,wheneverpossible,thespecialtools. Anyonewhoperformsrepairandmaintenanceoperationswithoutcomplyingwiththeproceduresprovidedherein shallberesponsibleforanysubsequentdamages. localdealers,rejectanyresponsibilityfordamagescausedbypartsand/orcomponentsnotapprovedbythemanuofdamagescausedbypartsand/orcomponentsnotapprovedbythemanufacturer.

Theinformationinthismanualisup-to-dateatthedateofthepublication.Itisthepolicyofthemanufacturerfor continuousimprovement.Someinformationcouldnotbeupdatedduetomodificationsofatechnicalorcommercial Incaseofquestions,refertoyourCASECONSTRUCTIONSalesandServiceNetworks.

INTRODUCTION

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Basicinstructions-Shopandassembly

2050M

Shimming

Foreachadjustmentoperation,selectadjustingshimsandmeasuretheadjustingshimsindividuallyusingamicrom-

Rotatingshaftseals

NOTE:

3.Positionthesealinglipfacingthefluid.

4.Coatthesealinglipwithathinlayeroflubricant(useoilratherthangrease).Fillthegapbetweenthesealinglip

O-ringseals

LubricatetheO-ringsealsbeforeyouinsertthemintheseats.ThiswillpreventtheO-ringsealsfromoverturningand twisting,whichwouldjeopardizesealingefficiency.

Sealingcompounds

Spareparts

Applyasealingcompoundonthematingsurfaceswhenspecifiedbytheprocedure.Beforeyouapplythesealing

Onlygenuinesparepartsguaranteethesamequality,duration,andsafetyasoriginalparts,astheyarethesame

• Machinemodel(commercialname)andProductIdentificationNumber(PIN)

•

INTRODUCTION

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INTRODUCTION Protectingtheelectronicand/orelectricalsystemsduringchargingandwelding Toavoiddamagetotheelectronicand/orelectricalsystems,alwaysobservethefollowingpractices: • • • weld. NOTICE: Ifyoumustweldontheunit,youmustdisconnectthebatterygroundcablefromthemachinebattery. WARNING Avoidcontactwithskin,eyesorclothing.Antidote(external):Flushwithwater.Antidote(eyes):flush withwaterfor15minutesandseekmedicalattentionimmediately.Antidote(internal):Drinklarge Failuretocomplycouldresultindeathorseriousinjury. W0111A Specialtools • Operatinginoptimaltechnicalconditions • Obtainingthebestresults • Savingtimeandeffort • Workinginsafeconditions 7111454816/03/2015