OPERATOR'S MANUAL

ENGINE
EngineFan
WARNING
Donotworkonthefanwiththe
enginerunning.Theenginefancan
engageatanytimewithoutwarning.
Beforeturningontheignition,be
surethatnooneisnearthefan.
Failuretocomplymayresultindeath
orpersonalinjury.
Yourtruckmaybeequippedwithan
On/OfforViscousFanDrive.Follow
theseguidelinestocheckyourengine
fan:
Checkthefanbearingsforfanhub
bearinglooseness,lossoflubricant
andanyabnormalconditions.(For
example,fanbeltmisalignedor
excessivewear/damage.)Before
startingtheengineandwiththeengine
off,lookandfeelforloosenessinthe
fanhub.
Withtheengineidlingandthehood
open,standatthefrontofthevehicle.
Listenforanynoisescomingfrom
thefanhub.Bearingsthathavelost
lubricant,andaredry,willtypicallyemit
asquealoragrowlwhentheengineis
atoperatingtemperatureandthefan
clutchisengaged.Ifnoiseisdetected,
havethefanbearingsinspectedbyan
authorizeddealership.
FanDriveandBlade
WARNING
Donotworkonthefanwiththe
enginerunning.Theenginefancan
engageatanytimewithoutwarning.
Beforeturningontheignitionbe
surethatnooneisnearthefan.
Failuretocomplymayresultindeath
orpersonalinjury.
FanBladeClearance:Aroundthefan
shroud,therecommendeddistance
is1in.(25mm)fromfrontedgeof
anyfanblade-to-radiatorsidemember.
Minimumclearanceis3/4in.(19mm).
•Rearedgeofanyblademustbe
nocloserthan3/8in.(9mm)to
thenearestenginecomponent.If
thiscannotbeobtained,thefan
spacerorfanisnotcorrect.
•Theleadingedgeofanyfanblade
mustbe1in.(25mm)fromthe
insideedgeoftheshroud.
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