TM 9-2815-202-34
2-5.
MALFUNCTION, TEST OR INSPECTION, AND CORRECTIVE ACTION
PROCEDURES (Cont)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
COLD STARTING OPERATION
15.
INOPERATIVE AIR BOX HEATER AT LOW AMBlENT TEMPERATURE
Step1. Check spark at air box heater.
a. Using aglow test light, test for spark at electrode. (Refer to Para4-1 or 6-11
for appropriate engine model.)
b. inspect for electrical shorts, defective ignition coil, and cracked electrode
porcelain.
c. If necessary, replace faulty parts. (Refer to Para 4-10 or 6-11 for appropriate
engine model)
Step 2. Check fuel at air box heater.
a. Replace fuel filter and strainer elements.
b. Clean fuel nozzle.
Step 3. Check solenoid valve using a multimeter.
Replace if faulty (Refer to Para 4-10 or 6-11 for appropriate engine model).
Step 4. Check air pump for air flow.
Replace pump if faulty (Refer to Para 4-10).
Step 5. Check ignition coil for spark at electrode.
Replace coil if faulty (Refer to Para 4-10 or 6-11 for appropriate engine
model).
Step 6. Check pump and motor assembly for fuel flow.
Replace assembly if faulty (Refer to Para 6-11 ).
END OF TEST
2-18
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