SERVICE BRAKE ASSEMBLY - CONTINUED
Highly polished parts do not mean replacement
is necessary. Only components that are scored
or show other unusual signs of wear must be
If the teeth of the adjusting pawl are
scored or rounded, replace the adjusting
pawl. If there is any doubt, replace the
If the internal scoring has rough
ridges, or the pawl guide slot is
deeply scored, replace the adjusting
If the roller ramp of the adjusting
plunger is brinelled, replace the
Check for proper tension on spring
(tension on spring should be 7.5 lbs.
with spring compressed to 9/16 of an inch).
If there is abnormal wear or damage such
as metal displacement along the tooth axis or
damaged teeth, replace the actuator.
Check for proper operation of the auto-
matic brake adjusters by checking the
brake lining to brake drum clearance.
The automatic adjusters are working
properly if clearance at the dust shield
inspection holes is between 0.010" to