TM 9-2320-273-20
BRAKE SYSTEM.
9-39. SLACK ADJUSTERS MAINTENANCE (Continued).
LOCATION/lTEM
ACTION
REMARKS
NOTE
The procedure in this paragraph is limited to
adjustment; it should be performed with
wheel off of ground and parking brake
released.
1. Adjusting screw (2).
a. While turning wheel rotate
adjusting screw (2) until
brakeshoes are tight
against brakedrum.
b. Back off adjusting screw (2)
approximately one turn or
until wheel does not drag.
2. CAB/Brake pedal.
Push completely down.
Second mechanic.
3. Slack adjuster (3) and
a. If brake chamber push rod
push rod (6).
(6) travel is less than 3/4
inch (1.9 cm) or more than
1 inch (2.54 cm) go to
part B.
b. If brake chamber push rod
(6) travel is 3/4 to 1 inch
(1.9 cm to 2.54 cm), ad-
justment is satisfactory.
c. If angle between slack
adjuster (3) and push rod
(6) is less than 90°, go to
part B.
d. If angle between slack
adjuster (3) and push rod
(6) is more than 90°,
adjustment is satisfactory.
Do this procedure carefully. The slack ad-
juster may be turned toward the brake cham-
ber and might snap back.
Change 2
9-175
