TM-9-2350-358-BD
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6
TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE
MARCH 1994
TM-9-2350-358-BD - Page 26 of 343
TM 9-2350-358-BD
2-5.
ASSESSMENT PROCEDURE - CONTINUED
d.
Each repair:
(1)
Contains general information about the problem.
(2)
Lists materials and/or tools required other than those commonly available to the crew, MT, and MST (if
the items listed are not available, improvise.
Anything that will do the job is acceptable).
(3)
Lists the estimated number of soldiers needed and the estimated time required to complete the repair.
(4)
States the operational limitations caused by the repair action before experiencing further
damage/degradation to the howitzer.
(5)
Provides other options you can use depending on the availability of personnel, materials, tools, and/or
time (this does not include standard maintenance procedures or recovery).
e.
Additional data is contained in the appendixes.
(1)
Appendix A lists Referenced Publications used for repair of the M109A6 howitzer.
(2)
Appendix B lists Special or Fabricated Tools.
(3)
Appendix C lists Expendable/Durable Supplies and Materials.
(4)
Appendix D lists Substitute Materials/Parts.
(5)
Appendix E lists BDAR Fixes Authorized for Training.
f.
As an example, presume that the engine coolant is overheating, only at high engine speeds.
There is no
apparent damage to the cooling system and fluid is present BDAR assessment procedures function as follows:
(1)
General Fault Assessment Table 2-1 directs the reader to visually inspect each major system of the
howitzer.
The reader inspects the engine and fuel system before determining that there is damage in the cooling system.
The reader is referred to Table 6-1 to perform a visual inspection of the coolant subsystems for which BDAR fixes are
available.
Damage to the coolant hose is found, affecting the water pump.
The reader must determine whether the
damage is repairable by assessing resources available and listed in the repair procedure paragraph (para 6-12).
If
damage cannot be repaired, the reader is directed to note repair requirements and recover the howitzer.
The assessment
would then be complete.
Assuming repair is possible, however, the reader would note repair requirements, complete
visual inspection of coolant subsystems (Table 6-1), and return to Table 2-1 to complete visual inspection of the howitzer’s
major subsystems.
Once all major subsystems have been visually inspected, the reader is directed to perform all noted
repair requirements and begin operation observation (Table 2-2).
(2)
General Fault Assessment Table 2-2 directs the reader to damage affecting operation of major systems,
subsystems, and components in the same way as the visual inspection.
If recovery becomes necessary, the assessment
ends.
If not, repair requirements are noted and performed only after the howitzer operation of all major systems have
been observed
In this example, restored water pressure is observed following repair of the collapsed hose.
The reader is
then directed to perform all final damage assessment, (Table 2-3).
(3)
General Fault Assessment Table 2-3 directs the reader to evaluate the howitzer’s performance
capability.
In order to determine its mission readiness.
The performance of the howitzer in this example is evaluated to be
near normal, so the howitzer is either FMC or combat capable.
All damage assessment is complete and this howitzer is
ready for use at the commander’s direction.
g.
At any point on each of the assessment levels, the assessor can abort the procedure and direct
recovery/evacuation or other actions if the tactical situation dictates.
2-3
TM 9-2350-358-BD
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