TM 9-2320-260-34-1
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
93. BLOWER RUNS BUT HEATER FAILS TO
IGNITE
Step 1. Test igniter (para. 17-25).
Replace igniter if defective (para. 17-18).
Step 2. Check fuel control valve (para. 17-25).
Replace fuel control valve if defective (para. 17-16).
Step 3. Check for obstructed ignition air passages.
Clear ignition air passages of obstructions.
END OF TESTING!
94. HEATER SMOKES DURING NORMAL OPERATION
Step 1. Check for contaminated fuel.
Check external fuel system for contaminated fuel (TM 9-2320-260-20). Refill with fresh fuel.
Step 2. Check for slow blower motor operation (para. 17-25).
Replace blower motor if defective (para. 17-20).
Step 3. Test fuel control valve (para. 17-25).
Replace fuel control valve if defective (para. 17-16).
END OF TESTING!
WINCHES
95. CLUTCH WILL NOT ENGAGE DRUM (FRONT AND MIDSHIP WINCHES)
Step 1. Check shifter shaft and clutch.
a. Remove end case and disassemble (para. 16-2).
b. Remove rust and dried lubricant, lubricate, reassemble, and install end case on winch
(para. 16-2).
Step 2. Check for mechanical obstruction if clutch handle moves short distance and then clatters.
Remove end case and disassemble. Inspect clutch and drum jaws for burrs, breaks, and
misalignment. Repair winch if defective (para. 16-2).
END OF TESTING!
96. WINCH NOISY UNDER
LOAD
Step 1. Check drum for radial free play.
Replace bushings if radial free play is present (para. 16-2 or 16-8).
Step 2. Check wormshaft radial free play.
Disassemble gearcase, inspect, and replace parts if defective (para. 16-2 or 16-8).
Step 3. Check automatic brake.
Replace brakeshoe if defective (para. 16-2 or 16-8).
END OF TESTING!