Case 2050M Tier 4A interim User manual

Part number 51418566
2nd edition English
November 2017
Replaces part number 47907864
SERVICE MANUAL
850M
Tier 4A (interim)
Crawler Dozer
PIN NDDC83000 and above; PIN NEDC80000 and above;
PIN NFDC80000 and above; PIN NFC103000 and above
Printedin U.S.A.
© 2017 CNH Industrial America LLC. All Rights Reserved.
Case is a trademark registered in the United States and many
other countries, owned or licensed to CNH Industrial N.V.,
its subsidiaries or affiliates.

SERVICEMANUAL
850MLongTrack(LT)-Tier4A(interim)[NFC103000-],850MLongTrack(LT)
[NDDC83000-],850MLongTrack(LT)[NEDC80000-],850MLongTrack(LT)
[NFDC80000-],850MWideTrack(WT)/LowGroundPressure(LGP)-Tier
4A(interim)[NFC103000-],850MWideTrack(WT)/LowGroundPressure
(LGP)[NDDC83000-],850MWideTrack(WT)/LowGroundPressure(LGP)
[NEDC80000-],850MWideTrack(WT)/LowGroundPressure(LGP)
[NFDC80000-]
5141856610/11/2017
EN

LinkProduct/Engine
ProductMarketProductEngine
850MLongTrack(LT)-Tier4A
(interim)[NFC103000-]
NorthAmericaF4HFE413P*A001
850MWideTrack(WT)/Low
GroundPressure(LGP)-Tier4A
(interim)[NFC103000-]
NorthAmericaF4HFE413P*A001
850MLongTrack(LT)
[NDDC83000-]
NorthAmericaF4HFE413P*A001
850MLongTrack(LT)
[NEDC80000-]
NorthAmericaF4HFE413P*A001
850MLongTrack(LT)
[NFDC80000-]
NorthAmericaF4HFE413P*A001
850MWideTrack(WT)/
LowGroundPressure(LGP)
[NDDC83000-]
NorthAmericaF4HFE413P*A001
850MWideTrack(WT)/
LowGroundPressure(LGP)
[NEDC80000-]
NorthAmericaF4HFE413P*A001
850MWideTrack(WT)/
LowGroundPressure(LGP)
[NFDC80000-]
NorthAmericaF4HFE413P*A001
5141856610/11/2017

Contents
INTRODUCTION
Maintenance..............................................................................00
[00.150]Start-up.............................................................................00.1
[00.AAA]Maintenancegenericsub-group...................................................00.2
Engine.......................................................................................10
[10.001]Engineandcrankcase.............................................................10.1
[10.216]Fueltanks..........................................................................10.2
[10.206]Fuellters..........................................................................10.3
[10.202]Aircleanersandlines..............................................................10.4
[10.250]Turbochargerandlines.............................................................10.5
[10.500]SelectiveCatalyticReduction(SCR)exhausttreatment...........................10.6
[10.400]Enginecoolingsystem.............................................................10.7
[10.414]Fananddrive......................................................................10.8
[10.310]Aftercooler..........................................................................10.9
[10.304]Enginelubricationsystem........................................................10.10
Powercoupling...........................................................................19
[19.100]Driveshaft..........................................................................19.1
Hydrostaticdrive.........................................................................29
[29.218]Pumpandmotorcomponents......................................................29.1
[29.202]Hydrostatictransmission...........................................................29.2
Brakesandcontrols....................................................................33
[33.110]Parkingbrakeorparkinglock......................................................33.1
[33.202]Hydraulicservicebrakes...........................................................33.2
Hydraulicsystems.......................................................................35
[35.000]Hydraulicsystems..................................................................35.1
[35.300]Reservoir,cooler,andlters........................................................35.2
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[35.104]Fixeddisplacementpump..........................................................35.3
[35.359]Maincontrolvalve..................................................................35.4
[35.525]Auxiliaryhydraulicvalvesandlines................................................35.5
[35.741]Dozerbladecylinders..............................................................35.6
Tracksandtracksuspension........................................................48
[48.130]Trackframeanddrivingwheels....................................................48.1
[48.100]Tracks..............................................................................48.2
[48.134]Tracktensionunits.................................................................48.3
[48.138]Trackrollers........................................................................48.4
[48.140]Dropboxandnaldrive............................................................48.5
Cabclimatecontrol.....................................................................50
[50.104]Ventilation..........................................................................50.1
[50.200]Airconditioning.....................................................................50.2
Electricalsystems.......................................................................55
[55.000]Electricalsystem...................................................................55.1
[55.011]Fueltanksystem...................................................................55.2
[55.014]Engineintakeandexhaustsystem.................................................55.3
[55.015]Enginecontrolsystem..............................................................55.4
[55.030]Servicebrakeelectricalsystem....................................................55.5
[55.050]Heating,Ventilation,andAir-Conditioning(HVAC)controlsystem.................55.6
[55.100]Harnessesandconnectors.........................................................55.7
[55.201]Enginestartingsystem.............................................................55.8
[55.202]Coldstartaid.......................................................................55.9
[55.301]Alternator.........................................................................55.10
[55.302]Battery............................................................................55.11
[55.408]Warningindicators,alarms,andinstruments....................................55.12
[55.512]Cabcontrols......................................................................55.13
[55.518]Wiperandwashersystem........................................................55.14
5141856610/11/2017

[55.988]SelectiveCatalyticReduction(SCR)electricalsystem..........................55.15
[55.DTC]FAULTCODES..................................................................55.16
Lubricationsystem......................................................................71
[71.460]Greaselubricationsystem.........................................................71.1
Dozerbladeandarm...................................................................86
[86.110]Dozerblade........................................................................86.1
[86.124]Dozerpushbeamsandstruts......................................................86.2
Tools.........................................................................................89
[89.128]Ripperassembly...................................................................89.1
Platform,cab,bodywork,anddecals.............................................90
[90.150]Cab.................................................................................90.1
[90.151]Cabinterior.........................................................................90.2
[90.154]Cabdoorsandhatches............................................................90.3
[90.120]Mechanically-adjustedoperatorseat...............................................90.4
[90.124]Pneumatically-adjustedoperatorseat..............................................90.5
[90.100]Enginehoodandpanels...........................................................90.6
5141856610/11/2017

INTRODUCTION
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1

INTRODUCTION
Safetyrules
850MNA
Personalsafety
Thisisthesafetyalertsymbol.Itisusedtoalertyoutopotentialpersonalinjuryhazards.Obeyall
safetymessagesthatfollowthissymboltoavoidpossibledeathorinjury.
ThroughoutthismanualyouwillndthesignalwordsDANGER,WARNING,andCAUTIONfollowedbyspecialin-
structions.Theseprecautionsareintendedforthepersonalsafetyofyouandthoseworkingwithyou.
Readandunderstandallthesafetymessagesinthismanualbeforeyouoperateorservicethemachine.
DANGERindicatesahazardoussituationthat,ifnotavoided,willresultindeathorseriousinjury.
WARNINGindicatesahazardoussituationthat,ifnotavoided,couldresultindeathorseriousinjury.
CAUTIONindicatesahazardoussituationthat,ifnotavoided,couldresultinminorormoderateinjury.
FAILURETOFOLLOWDANGER,WARNING,ANDCAUTIONMESSAGESCOULDRESULT
INDEATHORSERIOUSINJURY.
Machinesafety
NOTICE:Noticeindicatesasituationthat,ifnotavoided,couldresultinmachineorpropertydamage.
ThroughoutthismanualyouwillndthesignalwordNoticefollowedbyspecialinstructionstopreventmachineor
propertydamage.ThewordNoticeisusedtoaddresspracticesnotrelatedtopersonalsafety.
Information
NOTE:Noteindicatesadditionalinformationthatclariessteps,procedures,orotherinformationinthismanual.
ThroughoutthismanualyouwillndthewordNotefollowedbyadditionalinformationaboutastep,procedure,or
otherinformationinthemanual.ThewordNoteisnotintendedtoaddresspersonalsafetyorpropertydamage.
5141856610/11/2017
4

INTRODUCTION
Safetyrules-Personalsafety
850MNA
Generalsafetyrules
Usecautionwhenyouoperatethemachineonslopes.Raisedequipment,fulltanksandotherloadswillchangethe
centerofgravityofthemachine.Themachinecantiporrolloverwhennearditchesandembankmentsoruneven
surfaces.
Neverpermitanyoneotherthantheoperatortorideonthemachine.
Neveroperatethemachineundertheinuenceofalcoholordrugs,orwhileyouareotherwiseimpaired.
Whendiggingorusingground-engagingattachments,beawareofburiedcables.Contactlocalutilitiestodetermine
thelocationsofservices.
Payattentiontooverheadpowerlinesandhangingobstacles.Highvoltagelinesmayrequiresignicantclearance
forsafety.
Hydraulicoilordieselfuelleakingunderpressurecanpenetratetheskin,causingseriousinjuryorinfection.
•DONOTuseyourhandtocheckforleaks.Useapieceofcardboardorpaper.
•Stoptheengine,removethekey,andrelievethepressurebeforeyouconnectordisconnectuidlines.
•Makesurethatallcomponentsareingoodcondition.Tightenallconnectionsbeforeyoustarttheengineorpres-
surizethesystem.
•Ifhydraulicuidordieselfuelpenetratestheskin,seekmedicalattentionimmediately.
•Continuouslongtermcontactwithhydraulicuidmaycauseskincancer.Avoidlongtermcontactandwashthe
skinpromptlywithsoapandwater.
Keepclearofmovingparts.Looseclothing,jewelry,watches,longhair,andotherlooseorhangingitemscanbecome
entangledinmovingparts.
Wearprotectiveequipmentwhenappropriate.
DONOTattempttoremovematerialfromanypartofthemachinewhileitisbeingoperatedorwhilecomponentsare
inmotion.
Makesurethatallguardsandshieldsareingoodconditionandproperlyinstalledbeforeyouoperatethemachine.
Neveroperatethemachinewithshieldsremoved.Alwayscloseaccessdoorsorpanelsbeforeyouoperatethema-
chine.
Dirtyorslipperysteps,ladders,walkways,andplatformscancausefalls.Makesurethesesurfacesremaincleanand
clearofdebris.
Apersonorpetwithintheoperatingareaofamachinecanbestruckorcrushedbythemachineoritsequipment.DO
NOTallowanyonetoentertheworkarea.
Raisedequipmentand/orloadscanfallunexpectedlyandcrushpersonsunderneath.Neverallowanyonetoenter
theareaunderneathraisedequipmentduringoperation.
Neveroperatetheengineinenclosedspacesasharmfulexhaustgasesmaybuildup.
Beforeyoustartthemachine,besurethatallcontrolsareinneutralorparklockposition.
Starttheengineonlyfromtheoperator’sseat.Ifyoubypassthesafetystartswitch,theenginecanstartwiththe
transmissioningear.Donotconnectorshortacrossterminalsonthestartersolenoid.Attachjumpercablesas
describedinthemanual.Startingingearmaycausedeathorseriousinjury.
Alwayskeepwindows,mirrors,andalllightingcleantoprovidethebestpossiblevisibilitywhileyouoperatethema-
chine.
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5

INTRODUCTION
Operatecontrolsonlywhenseatedintheoperator’sseat,exceptforthosecontrolsexpresslyintendedforusefrom
otherlocations.
Beforeyouleavethemachine:
1.Parkthemachineonarm,levelsurface.
2.Putallcontrolsinneutralorparklockposition.
3.Engagetheparkingbrake.Usewheelchocksifrequired.
4.Lowerallhydraulicequipment—Implements,header,etc.
5.Turnofftheengineandremovethekey.
When,duetoexceptionalcircumstances,youwoulddecidetokeeptheenginerunningafteryouleavethe
operator’sstation,thenyoumustfollowtheseprecautions:
1.Bringtheenginetolowidlespeed.
2.Disengagealldrivesystems.
3.
WARNING
Somecomponentsmaycontinuetorundownafteryoudisengagedrivesystems.
Makesurealldrivesystemsarefullydisengaged.
Failuretocomplycouldresultindeathorseriousinjury.W0113A
Shiftthetransmissionintoneutral.
4.Applytheparkingbrake.
Generalmaintenancesafety
Keeptheareausedforservicingthemachinecleananddry.Cleanupspilleduids.
Servicethemachineonarm,levelsurface.
Installguardsandshieldsafteryouservicethemachine.
Closeallaccessdoorsandinstallallpanelsafterservicingthemachine.
Donotattempttoclean,lubricate,clearobstructions,ormakeadjustmentstothemachinewhileitisinmotionorwhile
theengineisrunning.
Alwaysmakesurethatworkingareaisclearoftools,parts,otherpersonsandpetsbeforeyoustartoperatingthe
machine.
Unsupportedhydrauliccylinderscanlosepressureanddroptheequipment,causingacrushinghazard.Donotleave
equipmentinaraisedpositionwhileparkedorduringservice,unlesstheequipmentissecurelysupported.
Jackorliftthemachineonlyatjackorliftpointsindicatedinthismanual.
Incorrecttowingprocedurescancauseaccidents.Whenyoutowadisabledmachinefollowtheprocedureinthis
manual.Useonlyrigidtowbars.
Stoptheengine,removethekey,andrelievepressurebeforeyouconnectordisconnectuidlines.
Stoptheengineandremovethekeybeforeyouconnectordisconnectelectricalconnections.
Scaldingcanresultfromincorrectremovalofcoolantcaps.Coolingsystemsoperateunderpressure.Hotcoolantcan
sprayoutifyouremoveacapwhilethesystemishot.Allowthesystemtocoolbeforeyouremovethecap.When
youremovethecap,turnitslowlytoallowpressuretoescapebeforeyoucompletelyremovethecap.
Replacedamagedorworntubes,hoses,electricalwiring,etc.
Theengine,transmission,exhaustcomponents,andhydrauliclinesmaybecomehotduringoperation.T akecare
whenyouservicesuchcomponents.Allowsurfacestocoolbeforeyouhandleordisconnecthotcomponents.Wear
protectiveequipmentwhenappropriate.
5141856610/11/2017
6

INTRODUCTION
Whenwelding,followtheinstructionsinthemanual.Alwaysdisconnectthebatterybeforeyouweldonthemachine.
Alwayswashyourhandsafteryouhandlebatterycomponents.
Fireandexplosionprevention
Fueloroilthatisleakedorspilledonhotsurfacesorelectricalcomponentscancauseare.
Cropmaterials,trash,debris,birdnests,orammablematerialcanigniteonhotsurfaces.
Alwayshaveareextinguisheronornearthemachine.
Makesurethatthereextinguisher(s)ismaintainedandservicedaccordingtothemanufacturer’sinstructions.
Atleastonceeachdayandattheendoftheday,removealltrashanddebrisfromthemachineespeciallyaroundhot
componentssuchastheengine,transmission,exhaust,battery,etc.Morefrequentcleaningofyourmachinemaybe
necessarydependingontheoperatingenvironmentandconditions.
Atleastonceeachday,removedebrisaccumulationaroundmovingcomponentssuchasbearings,pulleys,belts,
gears,cleaningfans,etc.Morefrequentcleaningofyourmachinemaybenecessarydependingontheoperating
environmentandconditions.
Inspecttheelectricalsystemforlooseconnectionsandfrayedinsulation.Repairorreplacelooseordamagedparts.
Donotstoreoilyragsorotherammablematerialonthemachine.
Donotweldoramecutanyitemsthatcontainammablematerial.Cleanitemsthoroughlywithnon-ammable
solventsbeforeweldingorame-cutting.
Donotexposethemachinetoames,burningbrush,orexplosives.
Promptlyinvestigateanyunusualsmellsorodorsthatmayoccurduringoperationofthemachine.
Generalbatterysafety
Alwaysweareyeprotectionwhenyouworkwithbatteries.
Donotcreatesparksorhaveopenamenearabattery.
Ventilatetheareawhenyouchargeabatteryoruseabatteryinanenclosedarea.
Disconnectthenegative(-)terminalrstandreconnectthenegative(-)terminallast.
Whenyouweldonthemachine,disconnectbothterminalsofthebattery.
Donotweld,grind,orsmokenearabattery.
Whenyouuseauxiliarybatteriesorconnectjumpercablestostarttheengine,usetheprocedureshownintheoper-
ator’smanual.Donotshortacrossterminals.
Followthemanufacturer’sinstructionswhenyoustoreandhandlebatteries.
Batterypost,terminals,andrelatedaccessoriescontainleadandleadcompounds.Washhandsafterhandling.This
isaCaliforniaProposition65warning.
Batteryacidcausesburns.Batteriescontainsulfuricacid.Avoidcontactwithskin,eyes,orclothing.Antidote(ex-
ternal):Flushwithwater.Antidote(eyes):ushwithwaterfor15minutesandseekmedicalattentionimmediately.
Antidote(internal):Drinklargequantitiesofwaterormilk.Donotinducevomiting.Seekmedicalattentionimmedi-
ately.
Keepoutofreachofchildrenandotherunauthorizedpersons.
5141856610/11/2017
7

SERVICEMANUAL
Engine
850MLongTrack(LT)-Tier4A(interim)[NFC103000-],850MLongTrack(LT)
[NDDC83000-],850MLongTrack(LT)[NEDC80000-],850MLongTrack(LT)
[NFDC80000-],850MWideTrack(WT)/LowGroundPressure(LGP)-Tier
4A(interim)[NFC103000-],850MWideTrack(WT)/LowGroundPressure
(LGP)[NDDC83000-],850MWideTrack(WT)/LowGroundPressure(LGP)
[NEDC80000-],850MWideTrack(WT)/LowGroundPressure(LGP)
[NFDC80000-]
5141856610/11/2017
10

Engine-Engineandcrankcase
Engine-Remove
850MNA
DANGER
Heavyobjects!
Liftandhandleallheavycomponentsusingliftingequipmentwithadequatecapacity.Alwayssupport
unitsorpartswithsuitableslingsorhooks.Makesuretheworkareaisclearofallbystanders.
Failuretocomplywillresultindeathorseriousinjury.D0076A
WARNING
Heavyobject!
ALWAYSuseahoistorgetassistancetoliftthecomponent.
Failuretocomplycouldresultindeathorseriousinjury.W0086A
WARNING
Heavyobject!
ALWAYSuseadequateliftingequipment(heavy-dutyhoist,loader,orforklift)toliftthecomponent.
Failuretocomplycouldresultindeathorseriousinjury.W0101A
1.Parkmachineonarm,levelsurface.
2.Lowerallequipmenttotheground.
3.Engageparkingbrakeandshutengineoff.
4.Relievesystemofhydraulicpressurebyactuatingall
hydraulicfunctions.Removekeywhencomplete.
5.Openbatteryaccessdoor.
RAIL13DOZ1352AA1
5141856610/11/2017
10.1[10.001]/3

Engine-Engineandcrankcase
6.Turnmasterbatterydisconnectswitch(1)totheOFF
position.
RAIL13DOZ1453AA2
7.Disconnectnegative(—)batterycable(2)frombattery
negativeterminal(3).
8.Openrightandleftengineaccessdoors.
NOTE:Therightengineaccessdoorisshown.Theleft
doorissimilar.
RAIL13DOZ1400AA3
9.Removerightandleftlowerengineaccesspanelsfrom
themachine.
NOTE:Therightlowerengineaccesspanelisshown.The
leftaccesspanelissimilar.
RAIL13DOZ1400AA4
5141856610/11/2017
10.1[10.001]/4

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