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 41 of 775
TM 9-2350-311-10
1-5
DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE - CONTINUED
Load cannon with projectile and full powder charge. Attach a 50 foot (15.2 m) or longer lanyard to firing mechanism.
Disconnect recoil cylinder lines and fire the weapon.
Take a sledgehammer and bend the end of the counter recoil buffer rod.
A second method is to close the breechblock and toss several thermite grenades down the cannon tube. Elevate the
cannon tube so that the grenades will fall against the breechblock. This will melt the breech and the powder chamber,
causing them to fuse together.
1-6
REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATION (EIR)
If your howitzer needs improvement, let us know. Send us an EIR. You, the user, are the only one who can tell us what
you don’t like about your equipment. Let us know why you don’t like the design or performance. Put it on an SF 368
(Product Quality Deficiency Report). Mail it to: Commander, U.S. Army Armament Research, Development and
Engineering Center, ATTN: AMSTA-AR-QAW-A (R)/Customer Feedback Center, Rock Island, IL 61299-7300. We
will send you a reply.
1-7 WARRANTY INFORMATION
The M109 howitzer series is no longer warranted.
1-8 NOMENCLATURE CROSS-REFERENCE LIST
Nomenclature in this manual was chosen in accordance with the terms used for provisioning as they appear in the
Repair Parts and Special Tools Lists (RPSTL). A few tools and cab components however are referred to by names
more common than those in the RPSTL. In many cases the more common name is a shorter name for the same
component.
Manual Nomenclature
Official Nomenclature
Cab ammunition rack assembly
Canister rack propellant
Projectile stowage rack assembly
Bracket assembly
Cannon tube
Tube assembly
Combat override switch
Override switch assembly
Dipstick
Hex key
Howitzer
Gage rod
Socket head screw key
155MM, medium, self-propelled howitzer,
M109A2/M109A3/M109A4/M109A5
Lockwire
Safety wire, nonelectrical wire
M1A1 collimator
Infinity aiming reference collimator M1A1
Change 2 1-3
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