Brake and Air System Maintenance Instructions (Cont)
11-6.1. REAR BRAKE CAMSHAFT AND ADJUSTABLE
SLACK ADJUSTER REMOVAL/INSTALLATION (CONT).
There are two types of spacers. Spacer
without shoulder and spacer with shoulder.
Spacers with a shoulder are installed with
the shoulder facing towards vehicle.
Apply antiseize compound to threads of
camshaft (19) splines prior to installation
on camshaft bracket (7).
Install camshaft (19) and spacer (20) in
camshaft bracket (7).
Install slack adjuster with adjusting screw and lock
toward brake chamber and make sure camshaft lobes are
Shim washers are used to remove camshaft end play.
Adjust camshaft end play to within 0.005 to 0.025 in.
(0.127 to 0.635 mm) by adding or removing shim washers
Install washer (21) and slack adjuster (22) on
Install shims (23) and retaining ring (24).
Install bracket (25) on air chamber (26) with washer (27)
and nut (28). Do not tighten nut.