Case 570T - 8 - TROUBLESHOOTING; Engine - Troubleshooting

8-TROUBLESHOOTING
8-TROUBLESHOOTING###_8_###
SYMPTOM(S)
Engine-Troubleshooting
Problem
PossibleCauseCorrection
TheenginedoesnotstartPartiallydischargedbatteries
Check,chargethebatteriesand,ifneces-
sary,replacethem
Corrodedorlooseconnectionstothebat-
teryterminals
Clean,inspect,tightenthenutsand,ifnec-
essary,replacetheexcessivelycorroded
terminalsandnuts
Dirtorwateraccumulationsinfuellines
Disconnectthelinesandtheinjectionpump
andcarefullycleanthem;ifnecessary,
cleananddrythefueltank
Nofuelinthetank
Fillthetank
Nosupplytotheinjectionpump
Checkand,ifnecessary,replacethesupply
pump
AirinthefuelsystemCheckthelines,thettings,thesupply
pump,theltersandtheinjectionpumpfor
thepresenceofair,thenbleedthesystem
DamagedstartermotorRepairorreplacethestartermotor
Theenginestops
IrregulardeliveryofthesupplypumpCheckdeliveryontheworkbench
Dirtorwateraccumulationsinfuellines
Disconnectthelinesandtheinjectionpump
andcarefullycleanthem;ifnecessary,
cleananddrythefueltank
RestrictedfuelltersReplacetheltercartridges
BurnedorcrackedvalvesReplacethevalves
AirinthefuelsystemCheckthelines,thettings,thesupply
pump,theltersandtheinjectionpumpfor
thepresenceofair,thenbleedthesystem
DamagedinjectionpumpcontrolsReplacethedamagedparts
Theengineoverheats
Thecentrifugalpumpofthecoolingsystem
isfaulty
Overhaulthepumpand,ifnecessary,re-
placeit
FaultytemperatureswitchReplacethetemperatureswitch
Radiatorpartiallyfaulty
Eliminatepossiblescalesbywashing,
checkandrepairpossibletubeleaks
Scalesincoolantpassagecompartments
incylinderheadsandcrankcase
Carefullywash
Centrifugalpumpdrivebeltandfandrive
belttooslack
Checkandadjustbelttension
Coolant(insufcientquantity)
Restorethelevelintheexpansiontankby
addingtheprescribeduid
IncorrecttimingoftheengineCheckandcorrectlytimetheengine
RestrictedairlterCleantheassemblyand,ifnecessary,re-
placethelterelement
Theenginehas
anomalousknocks
Partiallyobstructedordamagedinjectors
Clean,overhaulandcorrectlycalibratethe
injectors
DirtaccumulationsinfuellinesCleanthelinesandreplacethevisibly
dentedpipes;ifnecessary,cleantheinjec-
tionpump
Driveshaftknockscausedbyanexces-
siveclearanceofoneormorecrankshaft
bearingsorbigendbearingsorexcessive
shoulderclearance
Rectifythedriveshaftpins,assemblebig-
gershoulderbearingsandrings
UnbalanceddriveshaftCheckthealignmentandthebalanceofthe
driveshaftand,ifnecessary,replaceit
Looseywheelretainingscrews
Replacetheloosescrewsandtightenall
screwstotheprescribedtorque+angle
8-1