TM-9-2320-361-10
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
OPERATOR'S MANUAL
DECEMBER 1988
TM-9-2320-361-10 - Page 295 of 392
TM 9-2320-361-10
Table 3-1. Troubleshooting (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
41. POWER PLANT HEATER FAILS TO START WHEN RUN-OFF-START
SWITCH IS HELD IN START POSITION.
Exhaust gases can kill. Do not operate power plant heater in closed
area occupied by personnel. Doing this may result in injury or death
to personnel.
CAUTION
Do not operate fuel burning personnel heater and power plant
heater at the same time. Doing this may result in overworked
electric fuel pump.
NOT E
If RUN-OFF-START switch is turned to RUN position before red
indicator light illuminates, heater will not operate.
Step 1.
Step 2.
Step 3.
Press
PRESS-TO-TEST button on heater control box to check operation of
circuit.
If red indicator light does not illuminate, notify your supervisor.
Check fuel level on fuel gage.
Fill fuel tank if necessary.
Check to see if power plant heater shutoff cock is closed. Refer to
para. 2-6c.
Open power plant heater shutoff cock.
NOT E
Select HI position if engine is cold. Select LO position if engine is
already well heated. When in HI position, heater will automatically
change to LO position when coolant temperature exceeds 190°F, and
automatically change to HI position when coolant temperature
drops below 120°F.
42. HEATER FAILS TO CONTINUE BURNING.
Check fuel level on fuel gage.
Fill fuel tank if necessary.
43. WINDSHIELD DEFROSTERS NOT OPERATING.
Step 1. Check adjustment of defroster control handle.
Adjust defroster control handle.
Step 2. Check for restrictions in defroster deflectors.
Clear restriction.
44. ENGINE OIL PAN SHROUD NOT RECEIVING HEAT (POWER PLANT
HEATER ONLY).
Step 1. Check to see if power plant heater is operating. Refer to para. 2-48.
Start heater.
If inoperative, notify your supervisor.
3-14
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