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 80 of 1275
2-15 PROCEDURES FOR SEMIANNUAL/ANNUAL SERVICES — CONTINUED
ITEM
NO.
16
17
18
TABLE 2-1 UNIT PMCS FOR M109A2/M109A3/M109A4/M109A5 HOWITZERS — CONTINUED
INTERVAL
Annual
Annual
Annual
ITEM TO BE
INSPECTED
Shock Absorbers
Alternator Drive
Coupling
Starter
PROCEDURE
Check all shock mount nuts (26) for missing cotter pins
and looseness. If shock absorber mounting retaining
nuts are loose, torque to 100-140 Ib-ft (136-190 N·m).
Check alternator drive coupling (27) by turning
alternator fan, it should not move more than 0.125 in.
(3.2 mm). If it moves more than 0.125 in. (3.2 mm),
remove and inspect alternator drive coupling (para 8-2).
Replace if drive coupling is cracked or broken.
NOTE
• Remove powerplant from the vehicle and
perform a walk-around of the powerplant
(para 4-5).
• Check that all starter bolts and mounting
hardware are properly secured.
a. Check for missing or loose mounting hardware, if
loose, torque to 95–105 Ib-ft (129-142 N·m).
b. Check wiring harness and cables for frays, breaks, or
looseness.
NOT FULLY
MISSION
CAPABLE IF:
Any missing or
broken cotter
pins. Any class
Ill leaks. Any
missing or
broken shock
mount bolts.
More than
0.125-in. (3.2-
mm) play in
coupling gear
drive, bolts
missing from
drive coupling,
or cracked or
broken housing.
a. Any loose or
missing bolts.
b. Any loose or
frayed wires.
2-32
TM 9-2350-311-20-1
Back to Top
