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 2–1 2 PREPARATION FOR FIRING — CONTINUED 2-12.5 Loading the 155MM Cannon — Continued b. Power Ramming — Continued • Never load a propelling charge into propellant chamber by increments. Only fully assembled charges will be used. Critical malfunction could result causing injury to personnel. • Do not assemble M3 series green bag propelling charges with M4 series white bag propelling charges. Critical malfunction could result causing injury to personnel. • When inserting propelling charge, check that igniter (red) end is towards breechblock. If propelling charge is not properly loaded, a misfire may result causing injury to personnel. NOTE Don’t put propelling charge in until just before firing. Temperature variation will affect performance of propelling charge. 9 Cannoneer no. 1 receives propelling charge (17) from HD, loads propelling charge into propellant chamber with igniter (red) end toward breechblock (2) so that it is 3 inches (7.62 cm) inside rear of propellant chamber or in groove in propellant chamber, and announces,”1 SEE RED.” 2-209