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--155 2--12 PREPARATION FOR FIRING — CONTINUED 2--12.1 Pre-Firing Emplacement — Continued a. Emplacing Howitzer — Continued WARNING Travel lock assembly is heavy. Close travel lock cap before lowering travel lock assembly and be careful when lowering to avoid injury. 10 Driver disengages travel lock assembly (13) (para 2--10.8) and commands gunner to elevate. 11 On driver’s command, gunner turns CAB POWER switch (14) to ON and elevates cannon tube (15). Driver lowers and secures travel lock assembly (13) (para 2--10.8), gunner depresses cannon tube and turns ELEVATION CONTROL switch (16) to NO. 1 MAN position. 13 14 15 16