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 2-12 PREPARATION FOR FIRING — CONTINUED 2-12.5 Loading the 155MM Cannon — Continued b. Power Ramming — Continued 13 Do not fire without follower assembly. This will result in injury to personnel and damage to equipment. Be sure firing group block is all the way left. If it isn’t, a misfire will result. Do not hook lanyard to firing mechanism until cannon tube is elevated. NOTE Make sure flanged head of primer is firmly seated against cartridge extractor. Cannoneer no. 1, with left hand, palm out, back of hand toward breech, slides firing group block (22) to the left by pulling on follower assembly knob (23). 2-212