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 986 of 1275

TM 9-2350-311-20-1

c. Assembly

1 install horizontal adjusting bar (65), two screws (64), two flat washers (63), and two nuts (62) onto horizontal

adjusting group (56).

2 Position spring (61) between pawl (60) and backrest bracket group (52). Install headed pin (59) and new cotter

pin (58).

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

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

mounting studs (53).

NOTE

Install shims as required to provide a snug fit between cam follower and seat support

bracket.

5 Install four cam followers (48), shims (47), and four nuts (46).

6 Install adjusting lever bracket (39) and two screws’.

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