TM 5-3825-229-14&P
4-27.
SLACK ADJUSTER (cont)
a.
Removal (cont).
(4)
Use wrench to turn adjusting nut (4) clockwise. Move slack adjuster (2) away from clevis (5).
(5)
Remove lock ring (6) and washers (7) from camshaft (8). Remove slack adjuster (2) from camshaft (8).
b.
Installation.
(1)
Grease splines on slack adjuster gear and
brake camshaft.
(2)
Install slack adjuster on brake camshaft.
(3)
Install flat washers (7) and lock ring (6).
(4)
Remove pawl assembly (1) from slack
adjuster (2), if necessary.
CAUTION
If pawl is not removed, turning adjusting nut will
damage slack adjuster teeth.
(5)
Use wrench to turn adjusting nut (4) to align
hole in arm of slack adjuster with hole in
clevis (5).
(6)
Rotate slack adjuster (2) until there is
Slack Adjuster
2-1/2 inch (63.5 mm) between threaded end of clevis (5) to bottom of brake chamber (9).
(7)
Install clevis pins (3) and cotter pins.
(8)
Install pawl assembly (1). Tighten screw to 15-20 Ib-ft (20-27 Nm) (dry).
(9)
Adjust free stroke as follows:
c.
Adjusting Free Stroke.
NOTE
Slack adjuster needs only one adjustment when brake shoes are replaced. It will remain in correct
adjustment during life of brake lining.
(1)
To release spring forces from slack adjuster and camshaft, apply air to brake chambers. Do not apply
brakes. Cage brake chambers. Refer to para. 3-9.
(2)
Jack up axle to be adjusted and chock wheels on opposite side. Wheels raised up by jack should rotate
freely.
4-60
