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 532 of 775
TM 9-2350-311-10
5-10
Table 5-1. 155MM AMMUNITION FOR M109 HOWITZERS - CONTINUED
Authorized
Projectiles
Classification
Identification
Fuzes
Remarks
M864, HE,
DP extended
range, ICM
WARNING
•
A 5000–meter safety zone is required short of the target
because of the possibility of the base burner assembly non–
ignition.
•
The M864 projectile is not to be fired if the obturator is missing
or broken because it may result in a short round. If the band is
displaced and can be repositioned and remain in the groove,
the projectile can be fired.
•
For M864 projectiles marked with three solid white circles 120
°
apart on the ogive (above the weight zone markings) avoid
hazards resulting from gaps at the base to body joint and from
separation of the base from the body in the M864 projectile by
following these safety procedures:
Projectiles are to remain palletized as long as possible
prior to use.
Do not transport projectiles as loose cargo.
Do not fire projectiles received without grommets or with
evidence of dents, flattenings, or gouges to the lifting plug,
grommet, rotating band, and boatail area.
Do not fire projectiles which have been dropped loose from
supply vehicles or SP howitzers.
Any base separations should be handled by EOD
personnel.
•
A gap at the base to body joint of the projectile may lead to hot
propellant gases entering the round during firing and causing
an inbore premature. Gaps are not detectable with a visual
examination due to the presence of the obturator over the base
to body joint. In addition, a separation of the base from the
body of the projectile will expose M42 and M46 grenades.
Arming could occur and result in injury and/or death.
NOTE
•
The M864 is for extended range only. Use the M483A1
projectile through the M119A2 charge (zone 7) where
applicable. The M864 shall be fired to achieve ranges beyond
the capabilities of the M483A1 projectile or when the M483A1
projectile is not available.
•
For stowage of M864 projectiles, see para F-5.
Back to Top
