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 634 of 775
TM 9-2350-311-10
5-20 M712 AMMUNITION PREPARED FOR FIRING BUT NOT FIRED
a. General
M712 projectiles that have been unpacked but not fired will be repacked within 30 days and returned to battalion
ammunition section for further disposition. Long exposure of the M712 projectile to sunlight and other elements may
cause it to fail. Code and time switch settings made during preparation need not be reset. An M712 projectile that has
been unloaded from a weapon as result of a misfire or checkfire will be repacked as described below.
b. Repacking M712 Projectile
NOTE
An M712 projectile which has been rammed and extracted from a cold cannon tube maybe reused.
1
2
3
Wipe all loose dirt and moisture from M712 projectile (1).
Locate original container (2). If container has become unserviceable, replace container. If original
container cannot be found or has been replaced for unserviceability, make sure that markings on
replacement container match markings on M712 projectile (1). If markings do not match, return container
to battalion ammunition section for remarking.
Install M712 projectile (1) into container (2) as follows.
(a)
(b)
(c)
(d)
(e)
(f)
(9)
(h)
Check red decals, stenciling, or stamping (if present) at nose end of container (2) halves to assure
cover (3) and body (4) match. Switch container halves, if required.
Open container (2) (para 5-15). Remove lifting straps (5). Also remove fin and wing preload bands
(6).
Make sure that all four fin and wing slots securely engage fins and wings.
Install fin and wing preload bands (6) on M712 projectile (1).
Install lifting straps (5) on M712 projectile (1).
Spin tension mechanism counterclockwise by hand until it stops.
Lift M712 projectile (1) and position over opened container (2).
Carefully lower M712 projectile (1), guiding nose cone into retainer ring in the container (2).
Using torquing rod (7), turn tension mechanism clockwise, as far as possible, to snug M712
projectile (1) into the retainer ring. Position torquing rod in holes so that torquing rod is horizontal (or
as close to it as possible). This is required to avoid interference with the cover stops inside the
cover (3).
5-96
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