Case 570ST - Engine Troubleshooting Guide

Engine-Engineandcrankcase
Engine-Troubleshooting
NOTE:Thefollowingtablelistsproblemsandtheirpossiblecauseswithrecommendedremedialaction.
ATTENTION:Whenattendingarepairthecauseoftheproblemmustalsobeinvestigatedandcorrectedtoavoid
repeatfailures.
Problem
PossibleCauseCorrection
Enginedoesnotdevelop
fullpower
CloggedaircleanerCleanorrenewelement
Fuellineobstructed
Clean
Faultyinjectors
Cleanandreset
Incorrectvalveclearanceadjustment
Cleanandreset
Burnt,wornorstickingvalvesReplacevalveswithneworoversize,
and/ormachinethevalveguidebores
Blownheadgasket
Checkheadatnessandtnewgasket
IncorrectfueldeliveryCheckinjectorsandpump
Lowcylindercompression
Renewpistonringsorre-bore/re-sleeveas
necessary
Oilpressurewarninglight
failstooperate
BulbburntoutRenewbulb
WarningLightpressureswitchfaulty
Renewpressureswitch
WarninglightcircuitfaultyCheckandrenewwiring
Excessiveexhaustsmoke
Exhaustleakonexhaustmanifold
Fitnewgasket
Aircleanerdirtyorrestricted
Clean
ExcessivefueldeliveryOverallinjectionpumpandinjectors
EngineknocksDilutedorthinoil
Checkcrankshaftbearingsfordamage,
changeasrequired.Drainandrellwith
speciedoilandrenewlter.Ascertain
causeofdilution
InsufcientoilsupplyCheckoillevelandtopupasnecessary.
Overhaulorrenewpumpasnecessary.
Checkoillterisnotclogged
Lowoilpressure
Overhaulpumporreliefvalveasnecessary
Excessivecrankshaftendplay
Replacethrustwasher
Excessiveconnectingrodormain
Installnewbearinginsertsand/orbearing
clearancere-grindcrankshaft
BentortwistedconnectingrodsRenewconnectingrods
CrankshaftjournalsoutofroundRe-grindcrankshaftandtundersizebear-
inginserts
Excessivepistontocylinder
Re-bore/re-sleeveblockandtiboreclear-
ancenewpistons
ExcessivepistonringclearanceFitnewpistonsandrings
Brokenrings
Fitnewrings,checkboreandpistonsfor
damage
ExcessivepistonpinclearanceFitnewpistonorpin
Pistonpinretainerlooseormissing
Installnewretainer,andcheckbore/pistons
fordamage
Excessivecamshaftplay
Installnewthrustplate
Imperfectionsontiminggearteeth
Renewtiminggear
Excessivetiminggearbacklash
Checkandadjustbacklash/renew,timing
gear
Engineoverheats
Coolanthoseconnectionleakingorcol-
lapsed
Tightenhoseconnection,renewhoseif
damaged
Radiatorcapdefectiveornotsealing
Renewradiatorcap
Radiatorleakage
Repair/renewradiator
ImproperfanbeltadjustmentRe-adjustfanbelt
RadiatornsrestrictedCleanwithcompressedair
FaultythermostatRenewthermostat
Internalengineleakage
Checkforsourceofleakage.Renewgas-
ketordefectiveparts
WaterpumpfaultyOverhaulwaterpump
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