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 605 of 775
TM 9--2350--311--10
Change 6
5--69
5--9
AFTER FIRING
The following must be accomplished after firing.
1
Make sure breechblock assembly is in the fully open position.
2
Wipe face of spindle assembly after each round and swab the propellant chamber, making sure that all
burning fragments of powder charge are removed from propellant chamber. Look through the cannon
tube. If the cannon tube is clear, announce “BORE CLEAR.”
3
All ammunition fired must be recorded by charge number, type, and total number of each fired, and
entered on DA Form 2408--4.
5--10 AMMUNITION PREPARED FOR FIRING BUT NOT FIRED
a. General Instructions
WARNING
The projectiles and fuzes that have been rammed and then removed from the tube will not be
reloaded or fired, with the exception of M712 copperhead projectiles extracted from a cold
cannon tube. Put these aside for turn-in (para 5--20).
1
Using applicable fuze setter and procedure (para 5--6), reset the fuzes of the projectiles prepared for
firing but not rammed. Reset time fuzes to safe; reset VT fuzes to initial setting at which they were
shipped; reset point detonating fuzes to SQ or PD. M762/M767 ET series fuzes that have been
activated and not fired should be reset to
A
88.8, segregated, and used first in subsequent firings.
When the battery runs down on an activated M762/M767 series fuze, the LCD goes blank. These fuzes
are unserviceable, and should be packed separately, marked unserviceable, and turned in to the
ammunition supply point (ASP). To determine if an M762/M767 series fuze has been activated and run
down, gently attempt to turn the ogive clockwise by hand without depressing the selector button. If the
ogive turns easily, the fuze has been activated. An M762/M767 series fuze that has not been activated
should resist the applied torque. Replace safety wires on those fuzes furnished with them.
2
Disassemble fuze from projectile and repack in original packing. When a long intrusion proximity fuze is
removed from projectile, replace supplementary charge in projectile before assembling spacer and the
correct type of lifting plug.
NOTE
Be sure the correct type of lifting plug is used (e.g., energy-absorbing or shock attenuating
lifting plugs for M549 series projectiles, yellow fusible or universal lifting plugs for M483A1
series projectiles, and standard eyebolt lifting plugs for other projectiles).
3
Replace grommet over rotating band.
4
Restore propelling charges to original condition. Make sure all zones (increments) are present, tied, in
proper order, in good condition, of the proper lot number, and that igniter caps are replaced.
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