TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 307 of 775

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.”

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