Table 4-3. Organizational Troubleshooting
TEST OR INSPECTION
1. STARTER CRANKS ENGINE BUT STOPS WHEN START SWITCH IS RELEASED
Test for defective K1 relay. Refer to paragraph 4-42c for test procedures.
Replace defective relay. Refer to paragraph 4-42 for removal and installation instructions.
Check for defective oil pressure indicator.
If indicator is defective, refer to paragraph 4-26 for removal and installation instructions.
2. GENERATOR FAILS TO SUPPLY POWER TO LOAD
Check for a broken, burned, or cracked circuit breaker. Check for broken and worn wiring. Also, test the circuit
breaker with a multimeter.
If circuit breaker is damaged or defective, refer to paragraph 4-41 for removal and installa-
To facilitate installation of the circuit breaker, before removal of the wire leads from
the terminal at the back of the unit, make a diagram that shows the exact position
of each lead. It will be found that if the leads are allowed to turn from their original
position they will be too short to enable the successful installation of the circuit
3. FREQUENCY METER FAILS TO SHOW FREQUENCY
Check for loose connections or broken wiring.
Refer to paragraph 4-39 for repair instructions.
4. VOLTMETER FAILS TO SHOW VOLTAGE
See malfunction 3, above. If that does not correct the problem, go on to step 2.
Check for a broken or cracked voltmeter. Inspect wiring for breaks and wear. Test voltmeter by
connecting an additional voltmeter to load terminals of generator set and taking comparative
readings to establish validity of generator set voltmeter.
If voltmeter is defective, refer to paragraph 4-33 for removal and installation instructions.
Check for a broken or cracked voltage selector switch. Inspect wiring for breaks and wear. Test
with a multimeter for continuity of switch contacts.
If voltage selector switch is damaged or defective, refer to paragraph 4-37 for removal and