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 140 of 219
TM 9-2350-274-BD
ARMAMENT AND FIRE CONTROL SYSTEM
10-10. FIRE CONTROL INTERCHANGEABILITY (M109/M110 Families).
General Information:
The quickest method of repair for damaged fire control equipment may be to cannibalize replacement
from disabled vehicles. There are some minor differences in certain fire control components of the
vehicles listed below, but they will function. Cannibalize the required fire control component from
another vehicle as available. Fire control components of the M109/M110 family of vehicles are inter-
changeable with those of the following vehicles:
a. M15 Quadrant: M109, M110.
b. M1A1/A2 Gunner’s Quadrant: M109, M110.
c. M1A1 Collimator: M109, M110.
d. M140 Alignment Device: M109, M110.
e. M113/M115 Pantel: M102, M110.
1. The following fire control components can be cannibalized from disabled vehicles and utilized with
minor modified with some decrease in mission capability:
a. M137 Telescope Mount and M115 Panoramic Telescope can be replaced with an M113 unit. Align
and scribe per the Operator’s Manual using DAP. (Do complete alignment when time permits.)
b. M139 Elbow Telescope and M138 Mount. Place M137 and M115 on scribes, check against M140
Alignment Device. Use indirect telescope after above procedures are completed for direct tire.
c. M113 Panoramic Telescope from the M102 Howitzer can be mounted on the M110 Howitzer by
expanding the opening on the telescope mount subassembly, upper.
d. M15 Quadrant: Use quadrant seat on the M137 Telescope Mount and a gunner’s quadrant.
Materials/Tools:
●
Aiming Stakes
●
Aiming Post Light
●
Light Bulbs
2. Record the BDAR action taken. When the mission is completed, as soon as practicable, repair vehicle
using standard maintenance procedures.
10-16
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