Do not set free stroke
shorter than 5/8 in. (16 mm).
If free stroke is too short,
brake linings can drag and
The button must be pulled
out before turning the
manual adjusting nut or
damage to equipment will
Perform Step (7) if free stroke is
more than 3/4 in. (19 mm) or
less than 5/8 in. (16 mm).
Pull out button (2) and turn manual
adjusting nut (4), 1/8 turn at a time in the
required direction and check the free stroke
Refer to Para 2-16 and uncage brakes.
Repeat Steps (1) through (6) for
Refer to Para 2-9 and hook up trailer
air lines on truck.