BRAKE SYSTEM
Make sure that the fluid level registers
on or above the fluid level mark
molded on the reservoir - add more if
necessary, as follows:
1.
Remove each reservoir cap and
extract the rubber diaphragm from
each reservoir.
Booster and Master Cylinder
Assembly
2.
Fill each reservoir with clean
hydraulic fluid of the approved
specification (DOT 3 brake fluid).
3.
Insert the rubber diaphragms into
the reservoirs.
4.
To prevent leakage from the
reservoirs, ensure that the seal
in each reservoir cap is in good
condition before refitting the cap.
WARNING!
If the brake fluid reservoir requires
an excessive amount of hydraulic
fluid, the complete system must be
inspected for leaks and repaired if
necessary (consult your nearest Pe-
terbilt dealer). Failure to keep the
brake system in good repair may
lead to loss of braking and possibly
cause serious personal injury.
Service Brake Component
Inspection
Remove each wheel to inspect the
brake components.
System Components
CAUTION
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. 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
(03/17)
Y53-6060-1C1
5-69
5
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