TM 9-2320-272-10
Table 3-1. Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
48.
WINDSHIELD DEFROSTERS NOT OPERATING.
Step 1.
Check adjustment of defroster control handle.
Adjust defroster control handle.
Step 2.
Check for restrictions in defroster deflectors.
If restricted, clear restriction.
49.
ENGINE OIL PAN SHROUD NOT RECEIVING HEAT (ENGINE COOLANT HEATER ONLY).
Step 1.
Check to see if coolant heater is operating (para. 2-45).
Start heater. If inoperative, notify unit maintenance.
Step 2.
Check to see if coolant heater exhaust tube is disconnected from oil pan shroud.
If disconnected, reconnect heater exhaust tube.
50.
ENGINE COOLANT SYSTEM NOT RECEIVING HEAT (ENGINE COOLANT HEATER ONLY).
Step 1.
Check to see if coolant heater is operating (para. 2-45).
Start heater. If inoperative, notify unit maintenance.
Step 2.
Check to see if one or more coolant shutoff valves are closed at engine.
If closed, open coolant shutoff valve(s).
A-FRAME KIT
51.
WINCH INOPERATIVE.
Check winch.
See malfunctions 26 and 27.
52.
A-FRAME MISALIGNED.
Check to see if cable is secured in towing pintle.
If not, secure cable in towing pintle and lock pintle in closed position.
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