TM-9-2350-274-BD
M109/M110/M578 VEHICLES HOWITZER, MEDIUM, SELF-PROPELLED FULL-TRACKED
TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
JANUARY 1984
TM-9-2350-274-BD - Page 15 of 219
TM 9-2350-274-BD
INTRODUCTION
1-3. Application.
a. The procedures in this manual are designed for battlefield environments and should be used in
situations where standard maintenance procedures are impractical. These procedures are not meant to
replace standard maintenance practices, but rather to supplement them strictly in a battlefield environ-
ment. Standard maintenance procedures will provide the most effective means of returning a damaged
vehicle to ready status provided that adequate time, replacement parts, and necessary tools are available.
BDAR procedures are only authorized for use in an emergency situation in a battlefield environment, and
only at the direction of the commander.
b. BDAR techniques are not limited to simple restoration of minimum functional combat capability.
If full functional capability can be restored expediently with a limited expenditure of time and assets, this
should be done.
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c. Some of the special techniques in this manual, if applied, may result in shortened life or damage
to components of the M 109 vehicle/M 110 series vehicle/M 578 Recovery Vehicle. The commander must
decide whether the risk of having one less vehicle available for combat outweighs the risk of applying the
potentially destructive expedient repair technique. Each technique gives appropriate warnings and cau-
tions, and lists systems limitations caused by this action.
1-4. Definitions.
a. The term “battlefield damage” includes all incidents which occur on the battlefield and which
prevent the vehicle from accomplishing its mission, such as combat damage, random failures, operator
errors, accidents, and wear-out failures,
b. The term “repair” or ‘fix” in this manual includes any expedient action that returns a damaged
part or assembly to a full or an acceptably degraded operating condition, including:
(1) Short cuts in parts removal or installation.
(2) Installation of components from other vehicles that can be modified to fit or interchange
with components on the vehicle.
(3) Repair using M109/M110/M578 parts that serve a non-critical function elsewhere on the
same vehicle for the purpose of restoring a critical function.
(4) Bypassing of non-critical components in order to restore basic functional capability.
(5) Expeditious cannibalization procedures.
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