Peterbilt 348 2017 - Brake System Maintenance

BRAKESYSTEM
BRAKESYSTEM
BrakeAdjustment
WARNING!
Donotworkonthebrakesystem
withouttheparkingbrakesetand
wheelschockedsecurely.Ifthe
vehicleisnotsecuredtoprevent
uncontrolledvehiclemovement,it
couldrollandcausedeath,serious
personalinjuryordamagetothe
vehicle.
Tooperateyourvehiclesafely
andprotably,youneedsome
understandingofitsbrakesystems.
Formoreonbrakes,seetheIndex,
underBrakes.
Brakeadjustmentandbrakebalance
mustbesetcarefullyto(1)make
themostefcientuseoftheforces
availableforbrakingand(2)allow
equalstoppingforcesatallwheels.
CAUTION
Theairbrakesystemofthisvehicle
wasconguredforONEofthefol-
lowingoperations:tractorortruck,
andcomplieswiththerespective
portionsofFMVSS121.Atractor
shallnotbeoperatedorcongured
asatruck,norshallatruckbeop-
eratedorconguredasatractor,
withoutsignicantmodicationsto
theairbrakesysteminordertore-
taincompliancewithFMVSS121.
Contactyourdealerforinstructions.
Onceabrakesystemissetto
specications,changinganyoneof
itscomponentsoranycombinationof
componentsmaycausethesystem
tonotworkaswell.Allpartshave
toworktogethertoperformasthey
should.Anyreplacementcomponents
inyourbrakesystemshouldbeexactly
equaltotheoriginalcomponents.
Anychangesfromtheoriginal
specicationscanaffectthewhole
system.Allofthefollowingareas
areinterrelatedandmustconformto
originalspecications:
•TireSize
•Drumbrakes
a.CamRadius
b.WedgeAngle
c.DrumRadius
d.BrakeLinings
e.BrakeChambers
f.SlackAdjusters
•DiscBrakes
a.DiscRotors
(03/17)Y53-6060-1C15-63
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