TM 9-2320-289-20
7-7.
BRAKE SHOE AND WHEEL CYLINDER REPLACEMENT.
This task covers:
a. Removal
c. Adjustment
b. Installation
INITIAL SETUP:
Equipment Condition
Materials/Parts
• Brake drum removed. (See paragraph 8-5)
• One adjusting hole cover
• Rear brake line disconnected (if removing
•
Five
Iockwashers
wheel cylinder). (See paragraph 7-10)
• Grease (Item 26, Appendix C)
Tools/Test Equipment
General Safety Instructions
• Brake spring pliers
• DO NOT use a dry brush or
•
Torque
wrench
(0–600
Ib.-ft.)
compressed air to clean brake shoes
or brake components.
• Always wear goggles during removal
and installation of brake shoe springs,
a.
REMOVAL.
1.
2.
3.
7-14
WARNING
DO NOT use a dry brush or compressed air to clean brake shoes or brake
components. There may be asbestos dust on brake shoes or brake
components which can be dangerous to you if you breathe it. Brake
shoes and brake components must be wet, and a soft brush must be
used. Failure to follow this warning may result in serious illness or death
to personnel.
Always wear goggles during removal of brake shoe springs. Failure to
follow this warning may result in serious eye injury.
CAUTION
When brake shoes (5 and 17) are replaced, grooved, scored, tapered, or
out-of-round brake drums should be repaired to prevent damage to new
brake shoes. Notify your supervisor.
NOTE
• If removing brake shoes (5 and 17) and mounting hardware, perform
steps 1-12.
• If removing wheel cylinder, perform steps 1-13.
Back off adjusting screw (11).
NOTE
Adjusting assembly is factory-installed without washer (10). Use washer for
installation.
Pull forward on bottom of primary brake shoe (17). Remove socket (9), washer (10), adjusting
screw (11), and nut (12).
Unhook primary return spring (26) and secondary return spring (19).
Change 2
