TM-9-2350-311-10

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

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 218 of 775

TM 9-2350-311-10

2–10 OPERATING PROCEDURES — CONTINUED

2–10.6 Operating Hull and Cab Doors and Hatches — Continued

f. Commander’s Cupola Cover

1 Commander’s cupola cover with outside latch handle is operated as follows.

(a) To rotate commander’s cupola cover (28) loosen screw assembly (29). Rotate commander’s cupola

cover and tighten screw assembly to hold in position.

(b) To open commander’s cupola cover (28) from inside, pull down on latch (30) and turn door handle

assembly (31) to left to release. Secure commander’s cupola cover in open position with manual

control lever (32).

(c) To open commander’s cupola cover (28) from outside, use door handle (33).

(d) To close commander’s cupola cover (28), release manual control lever (32). Close commander’s

cupola cover and secure by turning door handle assembly (31) to right.

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