CIRCUIT BREAKER CB1 MOVES TO OFF POSITION WHEN FOG OIL SWITCH IS IN START POSITION

TM 3-1040-279-12&P

TROUBLESHOOTING (CONT)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Step 4. Inspect engine head.

WARNING

Cold air entering a hot engine chamber may

cause fire flashback and injury to personnel.

Purge hot gases from engine before removing

engine head from a hot generator. Immedi-

ately install spare engine head.

Engine and engine head may become very hot

during operation. Do not touch engine or

engine head with bare hand.

Remove engine head assembly (P. 3-8). If generator is hot, immediately install spare

engine head.

Wipe engine head clean.

Check if engine valve is broken, frayed, bent, sticking, or has carbon deposits.

If engine valve is damaged, replace engine head and repair (P. 3-10).

If engine valve is not faulty, reinstall engine head and nozzle assembly and notify

organizational maintenance.

4. CIRCUIT BREAKER CB1 MOVES TO OFF POSITION WHEN FOG OIL SWITCH IS IN START

POSITION.

Step 1. Check for short circuit in fog oil

pump assembly.

Disconnect cable assembly from

connector 6J3 at fog oil pump

assembly.

Set circuit breaker CB1 and

POWER switch to ON.

Set FUEL and ENGINE switches

to RUN. Hold FOG OIL switch to

START.

If circuit breaker CB1 stays

in the ON position, fog oil

pump assembly has a short

circuit. Notify organizational

maintenance.

If circuit breaker CB1 trips to

OFF position, set all switches

to OFF, reconnect cable

assembly and go to next step.

3-6