Peterbilt 348 2017 - Engine Fan

ENGINE
NOTE
Seetheenginemanufacturer'soper-
ator'smanualforfurtherinformation
onreplacingenginedrivebelts.
EngineFan
WARNING!
Donotworkonthefanwiththeen-
ginerunning.Theenginefancan
engageatanytimewithoutwarn-
ing.Beforeturningontheignition,
besurethatnooneisnearthefan.
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.
(03/17)Y53-6060-1C15-103
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