MODEL 330 OPERATOR'S MANUAL - Peterbilt Motors Company

Operating Instructions
with wheel chocks, chains, or other safe means to
prevent rolling before manually releasing the spring
brakes.
Vehicle Recovery and Spring Brakes
3. Slide out the release stud.
To move a vehicle immobilized by the spring brakes due to
loss of air pressure in the brake system, perform the following
procedure:
1. Remove the cap from the
spring chamber.
2. Remove the release stud
assembly from the side pocket,
and remove the release nut and
washer from the release stud.
4. Insert the release stud through
the opening in the spring chamber
where the cap was removed.
Insert it into the pressure plate.
Turn the release stud 1/4 turn
clockwise in the pressure plate.
This secures the cross pin into
the cross pin area of the pressure plate and locks it into
the manual release position.
5. Assemble the release stud
washer and nut on the release
stud.
Model 330 PB1318 3/01 – 111 –