TM-9-2320-361-34
2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE
MAY 1992
TM-9-2320-361-34 - Page 47 of 764
TM9-2320-361-34
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
79. ODOR OF FUEL IN VENTILATING AIR
Step 1. Check for leaking fuel connections at stand pipe and fuel valve.
Tighten connections if loose (para, 17-8 or 17-14).
Step 2. Check burner preformed packing and gasket (para. 17-9 or 17-16).
Replace preformed packing and gasket if defective (para. 17-9 or 17-16).
END OF TESTING!
80.
BLOWER RUNS BUT HEATER FAILS TO IGNITE
Step 1. Test igniter (para. 17-19 or 17-20).
Replace igniter if defective (para. 17-7 or 17-13).
Step 2. Check fuel control valve (para. 17-19 or 17-20).
Replace fuel control valve if defective (para. 17-6 or 17-12).
Step 3. Check for obstructed ignition air passages.
Clear ignition air passages of obstruction.
END OF TESTING!
81. HEATER SMOKES DURING NORMAL OPERATION
Step 1.
Step 2.
Check for slow blower motor operation (para. 17-19 or 17-20).
Replace blower motor if defective (para. 17-3 or 17-11).
Test fuel control valve (para. 17-19 or 17-20).
Replace fuel control valve if defective, (para. 17-6 or 17-12).
END OF TESTING!
Section Ill. GENERAL MAINTENANCE INSTRUCTIONS
2-7. GENERAL MAINTENANCE INSTRUCTIONS INDEX
Publications which provide additional information on general shop practice techniques, preservation,
welding, sheet metal work, etc., are listed in Appendix A, References, of this manual. To find a particular
general maintenance instruction, use the instruction index below.
PARA.
TITLE
PAGE
NO.
NO.
2-8.
Cleaning
2-33
2-9.
Inspection
2-34
2-10.
Repair
2-35
2-11.
Assembly - Precautionary Rules
2-36
2-32
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