TM 9-2330-203-14&P
4-21. SERVICE BRAKE ASSEMBLY REPLACEMENT (LATE MODEL M197A1 AND M1 98A1).
a
Removal
c
Installation
b
Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
Tools/Test Equipment:
Four cotter pins
General mechanic's tool kit
Brakeshoe spring pliers
Ten locknuts
C-clamp
a.
REMOVAL
WARNING
DO NOT handle brake shoes, brake drums, or other brake components unless area
has been properly cleaned. There may be 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, soft brush or cloth. Failure to
follow this warning may result In serious illness or death to personnel.
1.
Remove extension spring (25) from headless pins (4) using brakeshoe spring pliers.
2.
Remove retaining washer (1) and washer (2) from each pin (8).
3.
Remove slotted washer (24) from each pivot pin (22). Remove anchor link (23).
4.
Install C-clamp over ends of wheel cylinder (6).
5.
Remove two brake shoes (5).
6.
Remove two cotter pins (3) and headless pin (4) from each brakeshoe (5). Discard cotter pins.
7.
Remove spring tension washer (9) from each shouldered pin (13). Do not remove adjusting cams (10),
compression springs (11), and shouldered pin unless replacement is required.
8.
Remove nut (18) and lockwasher (17) from each pivot pin (22). Remove pivot pins. Discard lockwashers.
9.
Remove two screws (15) and lockwashers (14). Remove wheel cylinder (6) and shield (7) (para 4-23). Discard
lockwashers.
10.
Remove ten locknuts (16) and bolts (19) securing backing plate (12) to axle. Remove backing plate. Discard
locknuts and bolts.
4-40