TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 982 of 1275

TM 9-2350-311-20-1

b. Disassembly

1 Remove cotter pin (8), hook (9), chain (1 O), and headed pin (11). Discard cotter pin.

2 Remove backrest assembly (12) from backrest support assembly (13).

3 Remove self-locking nut (14), two flat washers (15 and 16), and screw (17) from bracket (18). Discard self-

Iocking nut.

4 Remove bracket (18) from backrest frame (19).

5 Remove self-locking nut (20), screw (21), and backrest support assembly (1 3). Discard self-locking nut.

6 Remove adjusting screw (22) and nut (23) from backrest support (24).

11-3