Case 570ST - Page 45

Engine-Engineandcrankcase
Problem
PossibleCauseCorrection
ExhaustgasleakageintocoolingRenewcylinderheadgasket
Coolantaeration
Tightenallconnectionsandcheckcoolant
leveliscorrect.Ensurecylinderheadgas-
kethasnotblown
Cylinderheadgasketimproperlyinstalled
Renewcylinderheadgasketinstalled
Hotspotduetorustandscaleorclogged
waterjackets
Reverseushentirecloggedwater
Obstructiontoradiatorairow
Removetheobstruction
Extendedengineidling
Donotallowenginetoidleforlongperiods
OilcoolertubeblockedClean
Radiatorcoretubesblocked
Checkfreeow
Watertemperaturegauge
failstoreachnormal
operatingtemperature
FaultytemperaturesenderRenewsenderswitch
Incorrectorfaultythermostat
Renewthermostat
FaultywatertemperaturegaugeRenewtemperaturegauge
LowoilpressureEngineoillevellowTopup,asnecessary
WronggradeofoilDrainandrellwithcorrectgradeofoil
Blockedoilpumpsumpscreen
Cleanpumpscreen
OilpressurereliefvalvefaultyFitnewreliefvalve
Oilpumpworn
Renewoilpump
Excessiveoilpumprotorandshaftassem-
blyclearance
Overhaulpump
Excessivemainorconnectingrodbearing
clearance
Installnewbearingsinsertsandbearing
clearanceorre-grindcrankshaftifneces-
sary
Excessiveoil
consumption
EngineoilleveltoohighReduceoillevel
ExternaloilleaksRenewgasketsandseals,whereneces-
sary.Checkmatingsurfacesfordamage
ordistortion
Wornvalves,valveguidesorboresRenew
CylinderheadgasketleakingRenewgasket.Checkheadfordamageor
distortion
OillosspastthepistonsandringsRenewringsand/orre-bore/re-sleeveblock
asnecessary
OilcoolerleakRepair/renewoilcoolerassembly
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