TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006
TM-9-2320-361-24-1

  TM-9-2320-361-24-1 - Page 156 of 1176

TM 9-2320-361-24-1
0008 00
0008 00-28
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. CLUTCH WILL NOT
ENGAGE DRUM
1. Check shifter shaft and clutch.
2. Check for mechanical obstructions
if clutch handle moves short
distance then clatters.
Replace winch if defective
(WP 0345 00).
Inspect clutch and drum jaws for
burrs, breaks, and misalignment.
Replace winch if defective
(WP 0345 00).
2. WINCH NOISY
WHEN UNDER LOAD
1. Check drum for radial free play.
2. Check wormshaft radial free play.
Replace winch if radial free play is
present (WP 0345 00).
Replace winch if radial freeplay is
present (WP 0345 00).
3. DRUM OVERRUNS
CABLE OR CABLE
COILS LOOSEN WHEN
PAYING OUT CABLE
Check drag brake adjustment
(WP 0342 00).
Replace winch if no adjustment
remains (WP 0345 00).
4. WINCH DOES NOT
HOLD LOAD WHEN
POWER RELEASED
1. Check for presence of burned odor.
2. Automatic brake does not hold
load after adjustment.
Inspect automatic brakeshoes,
replace winch if defective
(WP 0345 00).
Replace winch if defective
(WP 0345 00).
5. WINCH LEAKS OIL
1. Check for defective oil seals and
gaskets.
2. Check for cracked covers and
housing.
Replace winch if defective
(WP 0345 00).
Replace winch if cracked.
(WP 0345 00).
Table 12. Winch Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
Mechanical troubleshooting procedures for fuel burning personnel and engine coolant heaters are the
same. The following are for fuel burning personnel heaters.
1. HEATER FAILS TO
TURN ON
Bench test for defective control parts
(WP 0426 00 and WP 0435 00).
If defective replace control parts
(WP 0421 00 through WP 0429 00).
2. HEATER OVERHEATS,
OVERHEAT SWITCH
IS GOOD
1. Check for obstructed airflow.
2. Check fuel control valve
(WP 0421 00 or WP 0428 00).
If obstructed, clear obstructions from
fuel supply air and ventilation air
passages (WP 0246 00 and
WP 0248 00).
Replace fuel control valve if defective
(WP 0421 00 or WP 0428 00).
Table 13. Winterization Kits Troubleshooting Procedures.


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