CONSTRUCTION
334T/M2
ENGINE SERVICE MANUAL
87458412NA
Issued March, 2004 • 87458412NA • Bur Copyright ©2004 CNH America LLC. All Rights Reserved.
INTRODUCTION
TOTHEREADER
- Thismanualwaswrittenforaskilledtechnician andcontainsallthetechnicalinformationneeded torepairthisvehicle.
- Readthismanualcarefullyfortheinformation concerningrepairingoperations.
FURTHERREFERENCES
PAGENUMBER
- Foranyquestionorcomment,orshouldyounoticeanymistakeconcerningthecontentofthis manual,pleasecontact:
CNHAMERICALLC
700StateStreet Racine,WI53404U.S.A.
- Everypagecarriesanumberonthetoprightcorner.Everypagecontainsthefollowinginformation:
Example: T1--2--3
Progressivepagenumberforeachgroup
Groupnumber(ifany)
Sectionnumber
S: Safetyrules
Operationprinciple
T: TechnicalsectionPerformancetests
Faultdiagnosis
W: Instructionsectionforexcavatorrepairing
EW: Instructionsectionforenginerepairing
SYMBOLS
Thismanualcontainssafetywarningsymbolsandindicationsreferringtopossibleinjuriesorvehicledamages.
Thissymbolregardssafety.
Usegreatcarewhenyouseethissymbolbecausepossibleinjuriestothepersonnelmayoccur. Strictlyobservetheprecautionsmarkedwiththissymbol.
Thesafetywarningsymbolisusedalsotodrawattentionontheweightofacomponentoranelement. Makesureyouarealwaysusingtherightequipmentandliftingtechniqueswhenhandlingheavy loads,inordertopreventinjuriesordamages.
! IN--1
INTRODUCTION
UNITOFMEASURE
ThismanualadoptstheunitsofmeasurebasedontheInternationalSystem.
TheMKSAsystemunitsofmeasureareindicatedwithinbracketsaftertheunitsofmeasureoftheInternational System.
Example:24.5Mpa(250kgf/cm2).
ThefollowingtableconvertstheInternationalSystemunitsofmeasureinsomeofthemainunitsbelongingto othersystems.
IN--2
Quantity Toconvert from(IS) in (Others) Multiplyby Quantity Toconvert from(IS) in (Others) Multiplyby Length mm in 0.03937 Pressure MPa kgf/cm2 10.197 eng mm ft 0.003281 ressure MPa psi 145.0 L USgal 0.2642 Power kW PS 1.360 Volume L USqt 1.057 ower kW HP 1.341 m3 yd3 1.308 Temperature C F Cx1.8+32 Mass kg lb 2.205 Speed km/h mph 0.6214 Force N kgf 0.10197 pee min --1 rpm 1.0 orce N lbf 0.2248 Capacity L/min USgpm 0.2642 Torque N.m kgf.m 0.10197 apac mL/rev cc/rev 1.0 orque N.m lbf.ft 0.7375
REPAIRMANUAL ENGINES
Section1 --Diagnostics EW--1--1
Section2 --EngineF4CE0354AoverhaulEW--2--1
Section3 --Rechargingandstart--upEW--3--1
INDEXOFSECTIONS
4 WE MOTORI
Diagnostics EW--1--3
DIAGNOSTICS INDEX
.......................
SECTION1
INDICE
Mainengineoperatinganomalies:
1--Enginewon’tstart; 2--Engineoverheats;
3--Enginelackspowerandworkserratically;
4--Engineexhaustsmokeblackordarkgrey; 5--Engineexhaustsmokegrey(vergingon white);
1 ENGINEWON’TSTART
Connectionstobatteryterminalsareinworking order
6--Engineexhaustsmokelightblue;
7--Engineknocksirregularly;
8--Enginestops;
9--Engineexceedsmax.revsnumber;
10--Excessiveorinsufficientoilpressure;
11--Excessivefuelconsumption;
12--Enginewon’tstop.
Clean,check,tightenorreplaceclampnuts.
Batteriesinworkingorder
Carryoutthechecksdescribedinthe“Electric system”repairmanual.
StartermotorinworkingorderCarryoutthechecksdescribedinthe“Electric system”repairmanual.
ThermalstarterinworkingorderReplace.
InjectionpumptimedVerifycorrecttimingasdescribedintherelevant chapter.
YES YES YES YES NO NO NO NO NO (tobecontinued) EW--1--3
DIAGNOSTICS
DIAGNOSTICS
InjectorsinworkingorderCheckoperationandadjust.
Thefeedingcircuitorinjectionpumpdoesnot showairpenetration
Checkandblowoff.
Thefeedingcircuitorpumpdoesnotshowtraces ofwater
Checkandcleanthefeedingcircuit(includingthe tank).
PrescribedcompressionratioOverhaultheengineormakerepairsonlyon concernedparts(valves,pistonrings,etc.).
FuelfiltersinworkingorderReplace.
AutomaticadvancevariatorandelectricSTOP devicebothinworkingorder
Checkandreplacetheconcernedparts.
FuelpumpfedcorrectlyCheckandreplace(ifnecessary)thefuelpump.
FueltanksuppliedcorrectlyRefuel.
NO NO NO NO NO NO
NO
YES NO YES YES YES YES YES YES EW--1--4
DIAGNOSTICS
2
ENGINEOVERHEATS
Coolantlevelcorrect
Checkforleaksandrestorethelevel.
Fanandwaterpumpdrivebeltsinworkingorder
Checkforleaksandrestorethelevel.
WaterpumpinworkingorderOverhaulorreplacetheunit.
ThermostatinworkingorderReplace.
RadiatorinworkingorderWashdownthoroughly,checkforfluidleaks, replace(ifnecessary)thepart.
AirfilterandcircuitpipingbothinworkingorderCleanorreplacefaultyparts.
Openingsforcoolantflowtotheheadinworking order Washdownthoroughly. NO
YES YES YES YES YES
NO NO NO NO NO NO YES
EW--1--5
DIAGNOSTICS
ValvetimingcorrectCheckandperformcorrecttiming. YES
InjectionpumptimedCheckcorrecttimingasdescribedintherelevant paragraph.
CylinderheadgasketinworkingorderReplace.
FaninworkingorderReplace.
AirfilterinworkingorderCleantheunitandreplace(ifnecessary)thefilter element.
FuelfiltersinworkingorderReplacebyfollowingtheinstructionsgiveninthe “OwnerHandbook”.
FeedingcircuitinworkingorderCheckandmake(ifnecessary)therequired repairs.
3 ENGINELACKSPOWERANDWORKS ERRATICALLY (tobecontinued)
YES
YES
YES YES
NO NO NO NO NO NO
NO EW--1--6
DIAGNOSTICS
Thefeelingcircuitdoesnotshowimpuritiesand/ ortracesofwater
Takeoffthepipesandinjectionpump,cleanthem thoroughly,thenclean(ifnecessary)anddrythe fueltank.
ThermostatinworkingorderReplace.
FuelpumpinworkingorderReplace.
InjectorsinworkingorderCheckoperationandadjustthem.
InjectionpumptimedCheckcorrecttimingasdescribedintherelevant paragraph. YES
Automaticadvancevariator(ininjectionpump)in workingorder
Checkandbench--adjusttheinjectionpump.
Distributingplunger(ininjectionpump)in workingorder
Checkandbench--adjusttheinjectionpump. NO (tobecontinued)
YES YES YES
YES
NO NO NO NO NO NO YES
EW--1--7
DIAGNOSTICS
InjectionpumpratecorrectCheckandbench--adjusttheinjectionpump.
YES
Speedgovernor(ininjectionpump)inworking orderatallspeeds
YES
Checkandbench--adjusttheinjectionpump.
CircuitandL.D.A.devicebothinworkingorderCheck.
YES
Injectionpumpwithpeakadjusting--screwfine-tuned
Fine--tunethepeakadjusting--screw.
CorrectplaybetweenthevalvesandrockerarmsAdjusttheplaybetweenthevalvesandrocker arms.
PrescribedcompressionratioCheckandbench--adjusttheinjectionpump.
TurbochargerinworkingorderRepairorreplacetheunit.
Correcttierodlengthbetweentheaccelerator andinjectionpump
Adjustthetierodlength.
YES YES
NO NO NO NO NO NO YES
NO YES
EW--1--8
NO
DIAGNOSTICS
4 ENGINEEXHAUSTSMOKEBLACKOR DARKGREY
AirfilterinworkingorderReplace.
ThermalstarterinworkingorderReplace.
AutomaticadditiondevicecomesintooperationCheckandreplace(ifnecessary).
InjectorsinworkingorderCheckoperationandadjustthemasdescribed.
InjectionpumptimedCheckcorrecttimingasdescribedintherelevant paragraph.
L.D.A.deviceinworkingorderAdjusttheL.D.A.device.
InjectionpumpadjustedasprescribedCheckandbench--adjusttheinjectionpump.
(tobecontinued)
YES YES YES
YES YES
NO NO NO NO NO NO
YES
EW--1--9
NO
DIAGNOSTICS
InjectionpipesintactChecktheconditionofpipesandreplacethem(if necessary).
PrescribedcompressionratioCheckbymeansofaMotometer75301430tool andcarryoutthenecessaryoperations.
YES
High--qualitydieselfuelCleanthetankandreplacethedieseloilfilter.
ThethermostatcomesintooperationcorrectlyReplace.
YES
InjectorsinworkingorderCheckoperationandadjustasdescribedinS.I. 1094.
YES
InjectionpumptimedCheckcorrecttimingasdescribedintherelevant paragraph.
YES
CoolantlevelcorrectPossibleflowofcoolantintothecombustion chamber;replacethecylinderheadgasketor overhaultheengine.
NO (tobecontinued)
NO NO NO NO NO NO
5 ENGINEEXHAUSTSMOKEGREY (VERGINGONWHITE)
YES EW--1--10
DIAGNOSTICS
High--qualitydieseloilCleanthetankandreplacethedieseloilfilters. NO
6 ENGINEEXHAUSTSMOKELIGHTBLUE
YES
ExcessiveoilconsumptionChecktheoilvapourventandcylindercompression.Overhaul,ifnecessary,thecylinderheador engine.
NO YES EW--1--11
KnockdetectedinthedriveshaftCheckthefollowingitems:journalplayandout-of--roundness;screwfasteningforbedcapsand engineflywheel;oilpressure.Replacetheparts oroverhaultheengine.
KnockdetectedintheconnectingrodsCheckthefollowingitems:crankpinplayand out--of--roundness;screwfasteningforconnectingrodcaps;connectingrodsquaring.Replace thepartsoroverhaultheengine.
(tobecontinued)
NO NO
KnockdetectedinpistonsCheckthefollowingitems:playbetweenthepistonsandthecylinderliners;integrityofpiston rings;playbetweenthepinsandthepistonhubs. Replacethepartsoroverhaultheengine. YES YES YES
7 ENGINEKNOCKSIRREGULARLY
KnockdetectedintheinjectionpumpPerformcorrecttimingofinjectionpumponthe engine.
DIAGNOSTICS
KnockdetectedinthecylinderheadCheckthefollowingitems:operationplaybetweentherockerarmsandthevalves;injection pumptiming;valvetiming.Adjust.
KnockdetectedinthevalvegearCheckandreplace(ifnecessary)thegears; moreover,checkforbrokensprings,forexcessiveplaybetweenthestemsandguides,the tappetsandseats.Adjusttheplaybetweenthe valvesandrockerarms.
KnockdetectedininjectorsCheckandadjustasdescribedinS.I.1094,then replace.
KnockdetectedintheengineflywheelReplaceloosescrewsandtightenallscrewsto thespecifiedtorqueandangles.
KnockdetectedinthefuelpipingCleanthepipesandreplacethepipesthatshow evidentdents;clean(ifnecessary)theinjection pump.
FueltankfilledRefuelanddrain(ifnecessary).
FuelfiltersinworkingorderReplace.
NO NO
YES YES YES
NO YES NO
YES
NO NO
YES
EW--1--12
8 ENGINESTOPS (tobecontinued)
Thanks very much for your reading,
Want to get more information,
Please click here, Then get the complete manual
NOTE:
If there is no response to click on the link above, please download the PDF document first, and then click on it.
Have any questions please write to me: admin@servicemanualperfect.com
