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 2-13 FIRING THE CANNON — CONTINUED Procedure — Continued NOTE In combat emergency, the commander will determine if hot cannon tube procedures will be followed. 5 Any cannon tube that has or has not exceeded the prescribed rate of fire, but does cause water from a wet swab to boil, fry, or steam off when placed just forward of gas check seat is a hot cannon tube. Follow procedures below. 2-232