Peterbilt 348 2017 - Winterfronts

OPERATINGTHEENGINE
WARNING!
Donotworkonornearthefanwith
theenginerunning.Anyonenearthe
enginefanwhenitturnsoncouldbe
injured.IfitissetatMANUAL,the
fanwillturnonanytimetheignition
keyswitchisturnedtotheONposi-
tion.InAUTO,itcouldengagesud-
denlywithoutwarning.Beforeturn-
ingontheignitionorswitchingfrom
AUTOtoMANUAL,besurenowork-
ersarenearthefan.
CAUTION
Thefanorequipmentnearitcould
bedamagedifthefanturnsonsud-
denlywhenyoudonotexpectit.
Keepalltoolsandequipmentaway
fromthefan.
NOTE
Donotoperatetheenginefanin
theMANUALpositionforextended
periodsoftime.Thefanhubwas
designedforintermittentoperation.
Sustainedoperationwillshortenthe
fanhub'sservicelifeaswellasre-
ducefueleconomy.
Winterfronts
Awinterfrontorotherairowrestriction
devicemaybemountedinfrontof
theradiatortoincreasecabheater
temperatureincoldclimates.
CAUTION
Awinterfrontshouldonlybeused
attemperaturesbelow40°F(4°C).
Useofawinterfrontabove40°F
(4°C)candecreaselifeofcool-
ingmodulecomponents.Remove
winterfrontassoonastheambi-
enttempreaches41°F(5°C).The
useofawinterfrontabove40°F
(4°C)canresultinexcessiveengine
coolant,oil,andchargeair(intake)
temperatures,whichcanleadto
overheatingandpossibleengineor
coolantmoduledamageandemis-
sionsnon-compliance.
4-12Y53-6060-1C1(03/17)
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