Brake and Air System Maintenance Instructions (Cont)
Install clevis pin (16) through slack
adjuster (5) and brake chamber yoke (13).
Pry brakeshoes (17) away from
camshaft (2) and install cam roller
pins (18) and cam rollers (19).
Install front hub and drum assembly
A minimum of 13 lb-ft (18 Nm) of torque is
necessary to overcome the slack adjusters
internal clutch. A ratcheting sound will
occur. If a minimum of 13 lb-ft (18 Nm)
cannot be achieved, replace slack adjuster.
Rotate adjusting hex head (12)
clockwise until brake lining contacts
the drum. Once contact is made,
back-off adjusting hex head by 1/2
With full air pressure, release spring
and service brake, and check that
control arm (14) installation indicator is
within slotted area.
Remove clevis pin (16) and check that
brake chamber yoke (13) hole and slack
adjuster (5) hole remain in alinement. If
the brake chamber yoke pulls into the
brake chamber (9), loosen nuts (11)
and (15) and repeat b. lnstallation
steps (9) through (15) and c. Adjustment
steps (1) and (2). If brake chamber yoke
hole and adjuster hole remain in
alinement, go to step (3).
After slack adjuster (5) is adjusted properly, install clevis pin (16) and new cotter pin (20).
d. Follow-on Maintenance. None.
END OF TASK