OPERATOR'S MANUAL

AIRSYSTEM
PreventiveMaintenance
Thefollowingservicechecksare
providedforyourinformationonlyand
shouldbeperformedbyacertied
mechanic.Contactyourdealerorthe
enginemanufacturer'sMaintenance
Manualforfurtherinformationon
servicingaircompressors.
Aftercompletinganyrepairstotheair
system,alwaystestforairleaks,and
checkthebrakesforsafeoperation
beforeputtingthevehicleinservice.
Belowisalistofareastomaintainfor
theaircompressor:
•Inspectcompressorairlter
element,ifsoequipped,and
replaceelementifclogged.Check
compressormountinganddrive
foralignmentandbelttension.
Adjustifnecessary.
•Removecompressordischarge
valvecapnutsandcheckfor
presenceofexcessivecarbon.If
excessivecarbonisfound,clean
orreplacethecompressorcylinder
head.Also,checkcompressor
dischargelineforcarbon,and
cleanorreplacethedischargeline
ifnecessary.
•Disassemblecompressorand
thoroughlycleanandinspect
allparts.Repairorreplace
allwornordamagedparts,or
replacecompressorwithafactory
exchangeunit.
CAUTION
Whendrainingtheenginecooling
systemisrequired,toprevent
damagefromfreezing,the
compressormustalsobedrainedat
thecylinderheadandblock.Engine
damagecouldoccurifthecooling
systemisnotperiodicallydrained
andmaintained.SeeCooling
Systemonpage5-70forfurther
information.
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