TM 9-2320-260-10
Table 3-1. Troubleshooting (Cont’d)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
HEATING SYSTEM
27. HOT WATER PERSONNEL HEATER FAILS TO PRODUCE HEAT AFTER ENGINE REACHES
OPERATING TEMPERATURE.
Step 1.
Step 2.
Step 3.
Step 4.
Check to see if blower motor switch is in OFF position.
Place blower motor switch in HI or LOW position.
Check to see if heat vent control is open.
Open heat vent control.
Check to see if coolant shutoff cocks are closed. (Refer to paragraph 2-42.)
Open coolant shutoff cocks.
Check for air in heater.
With engine running, open air bleed draincock on engine side of heater and allow air to
escape. Close draincock.
28. HEATER BLOWER MOTOR OPERATES BUT HEAT FAILS TO REACH CAB OR DEFROSTERS
FAIL TO OPERATE.
Check to see if heat vent control and/or defroster control levers are adjusted properly.
Adjust heat vent control or defroster control levers to direct heat flow to desired location.
(Refer to paragraph 2-42.)
SPECIAL BODY EQUIPMENT:
FRONT WINCH AND MIDSHIPS WINCHES (M815)
29. WINCH DRUM DOES NOT TURN.
Step 1.
Check to see if power takeoff is engaged.
If not, engage power takeoff.
Step 2.
Check for broken propeller shaft shear pin.
Replace shear pin if broken.
Step 3.
Check to see if winch clutch lever is released. Engage clutch lever.
30. WINCH DRUM DOES NOT TURN FREELY WHEN PULLING OUT CABLE.
Step 1.
Check to see if drum lock knob is engaged.
Pull out drum lock knob, rotate 90 degrees, and release. (Refer to paragraph 2-22.)
Step 2.
On vehicles with level wind device, check to see if level wind lock knob and cable tensioner
lock knob and lever are engaged.
Release level wind lock knob and cable tensioner lock knob and lever.
HYDRAULIC CRANE
31. LACK OF POWER.
Step 1.
Check level of hydraulic oil in reservoir.
If low, add oil to proper level. (Refer to LO 9-2320-260-12.)
Step 2.
Check for hydraulic leaks.
If leaks are found, notify organizational maintenance.
Step 3.
See if supply valve is fully open.
Open valve completely.
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