PREVENTIVE MAINTENANCE BRAKE SYSTEM
Regional Haul
(R05/10) Y53-6033 – 185 –
Constant manual adjustment of automatic slack adjusters
can shorten the life of the internal clutch. If the installation
appears to be free of damage, but the applied stroke
range could not be achieved, the slack adjuster must be
replaced.
NOTE: The brake adjuster alone does not ensure
proper brake operation. Inspect all brake compo-
nents. All brake components work together and
must be checked periodically to ensure the brake
system works properly. See the “Maintenance
Manual” for more information on brake mainte-
nance.
Service Brake Component Inspection
Remove each wheel to inspect the brake components.
WARNING! When replacing disc brake pads,
be sure to use the same lining material on
both axles. Mixing lining types can result in
unbalanced braking, increased pad wear, or
degraded stopping performance possibly
cause an accident resulting in death or seri-
ous personal injury. Consult your nearest
Peterbilt dealer.
Disc brake pads
Visually inspect all brake pad linings. Brake pads
should be replaced when the remaining lining reaches
3⁄16 inch thickness or less.
It is recommended that all disc brake pads be
replaced at the same time since this will maintain bal-
anced braking. At a minimum, replace all disc brake
pads on one axle, both ends, at the same time.
