TM 9-2320-260-34-1
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 1. Check for obstructed air flow.
Clear obstructions from fuel supply lines and air and ventilating air passages if obstructed.
Step 2. Check fuel control valve (para. 17-25).
Replace fuel control valve if defective (para. 17-16).
END OF TESTING!
Test overheat switch (para. 17-25).
Replace overheat switch if defective (para. 17-22).
END OF TESTING!
Step 1. Check for obstructed fuel lines or contaminated fuel supply.
a. Clear fuel supply lines if obstructed (TM 9-2320-260-20).
b. Drain fuel control valve (para. 17-16).
Replace fuel control valve if defective (para. 17-16).
Step 2. Check fuel control valve (para. 17-25).
Replace fuel control valve if defective (para. 17-16).
END OF TESTING!
Perform malfunction 89, step 2.
END OF TESTING!
Check flame detector switch condition (para. 17-25).
Replace flame detector switch if defective (para. 17-15).
END OF TESTING!
Step 1. Check for leaking fuel connections at stand pipe and fuel valve.
Tighten connections if loose.
Step 2. Check burner O-ring and gasket.
Replace O-ring and gasket if defective (para. 17-21).
END OF TESTING!
