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 - Page 157 of 1176
0008 00-29/30 blank
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. HEATER OVERHEATS,
CONTINUES TO RUN
Test overheat switch (WP 0426 00
and WP 0435 00).
Replace overheat switch if defective
(WP 0422 00 and WP 0433 00).
4. HEATER OUTPUT
TOO LOW
1. Check for obstructed fuel lines or
contaminated fuel supply.
2. Check fuel control valve
(WP 0421 00 and WP 0428 00).
Clear obstructions from fuel lines
and drain contaminated fuel supply.
Replace fuel control valve if defective
(WP 0421 00 and WP 0428 00).
5. HEATER SMOKES
AND BANGS
WHEN STARTING
Check fuel control valve
(WP 0421 00 and WP 0428 00).
Replace fuel control valve if defective
(WP 0421 00 and WP 0428 00).
6. BLOWER WILL NOT
STOP AFTER
TURNOFF
Check flame detector switch
condition (WP 0421 00 and
WP 0428 00).
Replace fuel detector switch if
defective (WP 0417 00 and
WP 0431 00).
7. ODOR OF FUEL IN
VENTILATING AIR
1. Check for leaking fuel connections
at stand pipe and fuel valve.
2. Check burner preformed packing
and gasket (WP 0424 00 and
WP 0432 00).
Tighten connections if loose
(WP 0421 00 and WP 0428 00).
Replace preformed packing and
gasket if defective (WP 0424 00 and
WP 0432 00).
8. BLOWER RUNS BUT
HEATER FAILS TO
IGNITE
1. Test igniter (WP 0426 00 and
WP 0435 00).
2. Check fuel control valve
(WP 0421 00 and WP 0428 00).
3. Check for obstructed ignition air
passages.
Replace igniter if defective
(WP 0422 00 and WP 0429 00).
Replace fuel control valve if defective
(WP 0421 00 and WP 0428 00).
Clear ignition air passages of
obstructions.
9. HEATER SMOKES
DURING NORMAL
OPERATION
1. Check for blower motor operation
(WP 0418 00 and WP 0427 00).
2. Test fuel control valve
(WP 0426 00 and WP 0435 00).
Replace blower motor if defective
(WP 0418 00 and WP 0427 00).
Replace fuel control valve if defective
(WP 0421 00 and WP 0428 00).
TM 9-2320-361-24-1
0008 00
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)
Table 13. Winterization Kits Troubleshooting Procedures (Contd).
END OF WORK PACKAGE
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