Peterbilt 337 2017 - Engine Is Overheating

WHATTODOIF...
6.Waitafewminutestoallowoilto
drainintotheengineoilpan,and
thenchecktheoillevel.(SeeOil
LevelCheckonpage5-100,for
detailsoncheckingoillevel.)
7.Addoilifnecessary.Iftheproblem
persists,contactanauthorized
dealerassoonaspossible.
CAUTION
Continuingtooperateyourvehicle
withinsufcientoilpressuremay
causesevereenginedamageor
causeanaccidentwhichmayresult
inequipmentorpropertydamage.
Itisimportanttomaintainoilpressure
withinacceptablelimits.Ifoilpressure
dropsbelowtheminimumpsi(kPa)a
RedWarningLampontheoilpressure
gaugewillilluminateandtheStop
EngineLampwillcomeON.
EngineisOverheating
Thecoolingsystemmayoverheatif
thecoolantlevelisbelownormalorif
thereissuddenlossofcoolant,such
asasplithose.Thesystemmayalso
temporarilyoverheatduringsevere
operatingconditionssuchas:
•Climbingalonghillonahotday
•Stoppingafterhigh-speeddriving
Ifeitheroneoftheaboveoccurs,DO
NOTTURNOFFTHEENGINEunless:
a)theLowWaterwarningdevice
indicatesalossofcoolant,b)theRed
Warninglamp(onthegauge)and
CheckEnginelampcomesON,c)the
Buzzersoundsshowinganoverheat
condition,ord)ifyouhaveanyother
reasontosuspecttheenginemaybe
overheating-followthesesteps.
1.Reduceenginespeedand
stop.Whenstopped,placethe
transmissioninNeutralandsetthe
parkingbrake.(SeeParkingBrake
Valveonpage4-43andPutting
theVehicleinMotiononpage
4-19,fortransmissionshiftingand
parkingbrakeinformation.)Keep
theenginerunning.
2.ChecktoensuretheOilPressure
Gaugereadsnormal.
3.Makesuretheenginefanis
turningbyswitchingtheEngine
FanSwitchfromAUTOtoMAN
(Manual).
4.Increasetheenginespeedto
aboutone-halfoffulloperating
speed,or1,100to1,200rpm,
maximum.
5.Returntheenginespeedtonormal
idleafter2or3minutes.
6.Monitortheenginetemperature.
Afterthetemperaturereturnsto
normal,allowtheenginetoidle
3to5minutesbeforeshuttingit
(03/17)Y53-6060-1C12-5
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