TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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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. 2-122