TM 9-2330-267-14&P
4-32. SERVICE BRAKE MAINTENANCE (Con’t).
NOTE
Perform step 7 only if backing plate needs to be replaced.
7.
Remove twelve screws (10), Iockwashers (7), nuts (6), cable ramp (9), and backing plate (8) from axle
assembly. Discard Iockwashers.
b.
CLEANING AND INSPECTION
WARNING
l Dry cleaning solvent P-D-680 is toxic and flammable. Always wear protective
goggles and gloves, and use only in a well-ventilated area. Avoid contact with skin,
eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame or
excessive heat. The solvent’s flash point is 100°F-138°F (38°C-59°C). If you
become dizzy while using cleaning solvent, immediately get fresh air and medical
help. If solvent contacts eyes, immediately wash your eyes and get medical aid.
l DO NOT handle brakeshoes, brakedrums, or other brake components unless area
has been properly cleaned. There maybe asbestos dust on these components which
can be dangerous if you touch It or breathe it. Wear an approved filter mask and
gloves. Never use compressed air or a dry brush to clean brake components. Dust
may be removed using an industrial-type vacuum cleaner. Clean dust or mud away
from brake components with water and a wet, ft brush or cloth. Failure to follow
this warning may result In serious illness or death to personnel.
1.
Clean all parts with dry cleaning solvent.
2.
Inspect all parts for damage. Replace any damaged parts.
3.
Inspect brakeshoe surfaces for cracks, distortion, and excessive wear. Brakeshoe linings should have a
minimum thickness of ~ in. (3.2 mm). Replace brakeshoes if cracked or if lining thickness is less than ~ in.
(3.2 mm).
c . A S S E M B LY
NOTE
Perform step 1 only if backing plate was removed.
1.
Install twelve screws (10), nuts (6), new Iockwashers (7), cable ramp (9), and new backing plate (8) on axle
assembly,
2.
Install four service brake pins (11) on two brakeshoes (1) with four washers (2) and nuts (3).
3.
Install screw (5), spacer (4), flatwasher (22), new Iockwasher (21), and nut (20) on left brakeshoe (1).
4.
Install capscrew (19), new Iockwasher (17), and flatwasher (16) on right brakeshoe (1).
5.
Install connecting link (23), tension spring washer (24), flatwasher (25), and slotted washer (26), on service
brake pin (11).
6.
Install lever (12), tension spring washer (13), flatwasher (14), and slotted washer (15) on service brake pin (11).
7.
Install top and bottom brakeshoe return springs (18).
