Peterbilt 325 2017, Operator'S Manual, Page: 277 / 392

BRAKE SYSTEM
WARNING!
Manual adjustment of automatic
slack adjusters is a dangerous prac-
tice that could have serious con-
sequences.
It gives the operator
a false sense of security about the
effectiveness of the brakes.
Con-
tact the Service Department at your
dealership if the stroke exceeds the
above specifications. A stroke ex-
ceeding these values may indicate
a problem with the slack adjuster or
the brake foundation.
Hydraulic Brake System
To operate your vehicle safely, you
need some understanding of its brake
systems. Brake adjustment and brake
balance must be set carefully to allow
equal stopping forces at all wheels.
Tires are also a very important part of
the whole system. How fast you can
stop depends on how much friction
there is between the road and your
tires.
Introduction
To operate your vehicle safely, you
need some understanding of its brake
systems. Brake adjustment and brake
balance must be set carefully to allow
equal stopping forces at all wheels.
Tires are also a very important part of
the whole system. How fast you can
stop depends on how much friction
there is between the road and your
tires.
All of the following areas are
interrelated and must conform to
original specifications:
•
wheel size
•
tire size
•
brake pads
•
brake rotors
•
front wheel bearings
•
front end alignment
•
parking brake drum radius
Once a brake system is set to
specifications, changing any one of
its components or any combination of
components may degrade the system.
All parts have to work together to
perform as they should.
Your brake system is hydraulically
operated. Refer to the section titled
Service Brake Component Inspection
(03/17) Y53-6060-1C1
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