TM-9-2350-311-20-1
HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5
TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS
AUGUST 1994
TM-9-2350-311-20-1 - Page 89 of 1275
TM 9-2350-311-20-1
ITEM
NO.
31
32
33
INTERVAL
Annual
Annual
Annual
ITEM TO BE
INSPECTED
Engine
Decals, Instruction
Plates, Stencil
Markings, and
Paint
Final Road Test
PROCEDURE
Drain engine crankcase (only after operation).
Coordinate any required seasonal change of oil weight
with this service, if possible. Place vehicle on level
ground, remove cover on bottom of hull and remove oil
drain plug. After draining, clean and reinstall plug and
cover. Refill crankcase (approximately 27 to 38 qt [26 to
36 L] dry) with OE/HDO (item 49, Appx D) to ADD mark
on dipstick. For extreme cold operation with OEA (item
47, Appx D) this is a semiannual check. Drain oil filter
and remove elements, clean shell parts with dry-
cleaning solvent (item 21, Appx D). Dry, inspect, and
reinstall with new elements.
Perform STE/lCE-R PMCS testing. Perform STE/ICE-R
10, 13, 14,50,67, 72,73,74, and 75 (Appendix i).
Replace decals and instruction plates and restencil
markings that are not legible. Clean and paint bare or
worn spots (para 2-7 and 2-18).
a. Check performance of items that were adjusted,
repaired, or replaced as a result of road test.
b. Move steering wheel through its entire range and
observe if steering response is satisfactory. With vehicle
operating at 15 to 20 mph and steering wheel centered,
observe if wheel wanders or pulls to one side.
c. Accelerate vehicle to 15 mph (24 km/h). Release
accelerator pedal and apply brakes. Vehicle should stop
without pulling to one side. With vehicle stopped on an
incline, and with transmission in neutral (N), depress
brake pedal and apply parking brakes. Brakes should
lock securely and hold vehicle in place. Adjust brakes if
required (para 9-10).
NOT FULLY
MISSION
CAPABLE IF:
Oil is milky, any
Class Ill leak, or
AOAP requests
oil change.
2-41
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