Peterbilt 348 2017 - Page 279

BRAKESYSTEM
Makesurethattheuidlevelregisters
onorabovetheuidlevelmark
moldedonthereservoir-addmoreif
necessary,asfollows:
1.Removeeachreservoircapand
extracttherubberdiaphragmfrom
eachreservoir.
BoosterandMasterCylinder
Assembly
2.Filleachreservoirwithclean
hydraulicuidoftheapproved
specication(DOT3brakeuid).
3.Inserttherubberdiaphragmsinto
thereservoirs.
4.Topreventleakagefromthe
reservoirs,ensurethattheseal
ineachreservoircapisingood
conditionbeforerettingthecap.
WARNING!
Ifthebrakeuidreservoirrequires
anexcessiveamountofhydraulic
uid,thecompletesystemmustbe
inspectedforleaksandrepairedif
necessary(consultyournearestPe-
terbiltdealer).Failuretokeepthe
brakesystemingoodrepairmay
leadtolossofbrakingandpossibly
causeseriouspersonalinjury.
ServiceBrakeComponent
Inspection
Removeeachwheeltoinspectthe
brakecomponents.
SystemComponents
CAUTION
Whenreplacingdiscbrakepads,be
suretousethesameliningmaterial
onbothaxles.Mixingliningtypes
canresultinunbalancedbraking,
increasedpadwear,ordegraded
stoppingperformance.Consultyour
nearestPeterbiltdealer.
Discbrakepads-Visuallyinspectall
brakepadlinings.Brakepadsshould
bereplacedwhentheremaining
liningreaches3⁄16inchthicknessor
(03/17)Y53-6060-1C15-69
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