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 985 of 1275

TM 9-2350-311-20-1

11-1 DRIVER’S SEAT ASSEMBLY — CONTINUED

b. Disassembly — Continued

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Remove four nuts (49), four washers (50), reinforcement bracket (51 ), and backrest bracket group (52) at

mounting studs (53).

Remove nut (54), flat washer (55), and horizontal adjusting group (56) at mounting stud (57).

Remove cotter pin (58) from headed pin (59)

group (52). Discard cotter pin.

Remove two nuts (62), two flat washers (63),

adjusting group (56).

and release pawl (60) and spring (61) from backrest bracket

two screws (64), and horizontal adjusting bar (65) from horizontal

11-6