Peterbilt 348 2017 - Page 277

BRAKESYSTEM
WARNING!
Manualadjustmentofautomatic
slackadjustersisadangerousprac-
ticethatcouldhaveseriouscon-
sequences.Itgivestheoperator
afalsesenseofsecurityaboutthe
effectivenessofthebrakes.Con-
tacttheServiceDepartmentatyour
dealershipifthestrokeexceedsthe
abovespecications.Astrokeex-
ceedingthesevaluesmayindicate
aproblemwiththeslackadjusteror
thebrakefoundation.
HydraulicBrakeSystem
Tooperateyourvehiclesafely,you
needsomeunderstandingofitsbrake
systems.Brakeadjustmentandbrake
balancemustbesetcarefullytoallow
equalstoppingforcesatallwheels.
Tiresarealsoaveryimportantpartof
thewholesystem.Howfastyoucan
stopdependsonhowmuchfriction
thereisbetweentheroadandyour
tires.
Introduction
Tooperateyourvehiclesafely,you
needsomeunderstandingofitsbrake
systems.Brakeadjustmentandbrake
balancemustbesetcarefullytoallow
equalstoppingforcesatallwheels.
Tiresarealsoaveryimportantpartof
thewholesystem.Howfastyoucan
stopdependsonhowmuchfriction
thereisbetweentheroadandyour
tires.
Allofthefollowingareasare
interrelatedandmustconformto
originalspecications:
•wheelsize
•tiresize
•brakepads
•brakerotors
•frontwheelbearings
•frontendalignment
•parkingbrakedrumradius
Onceabrakesystemissetto
specications,changinganyoneof
itscomponentsoranycombinationof
componentsmaydegradethesystem.
Allpartshavetoworktogetherto
performastheyshould.
Yourbrakesystemishydraulically
operated.Refertothesectiontitled
ServiceBrakeComponentInspection
(03/17)Y53-6060-1C15-67
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