TM5-6115-593-34
NAVFAC P-8-631-34
TO-35C2-3-463-2
Table 2-2. Generator Set, Troubleshooting
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE FAILS TO CRANK WHEN MASTER SWITCH IS MOVED TO START.
Move MASTER SWITCH to start. If the starter motor cranks and the engine does not turn over, the starter motor
gear is not engaging the engine's ring gear (flywheel).
Remove starter motor and test in accordance with paragraph 13-5/13-6
Inspect teeth of the ring gear (at the point where the starter motor was mounted). If the teeth have
broken off, replace the ring gear (refer to paragraph 13-22).
2. ENGINE CRANKS AT NORMAL SPEED BUT WILL NOT START
As engine is being cranked check position of the throttle arm on fuel injection pump.
If throttle arm is in no fuel position (toward the right), stop cranking. Disconnect electrical connector from
top of hydraulic governor. (This will allow the hydraulic governor to operate in its mechanical mode, free
of any control from governor controller A106.) Recrank engine. If engine starts, then A106 should be
tested and repaired as required (see paragraph 4-11).
If engine still does not start, disconnect one end of linkage between throttle arm and hydraulic governor.
Recrank engine as throttle arm is manually (and slowly) brought toward full fuel position (toward left). If
engine starts, hydraulic governor is probably at fault and should be checked and repaired as required
(see paragraph 12-2). If engine does not start, the fuel injection pump should be tested and repaired as
required (see paragraph 13-14).
3. ENGINE SHUTS DOWN SOON AFTER STARTING
Crank engine. As engine is being cranked check position of throttle arm on fuel injection pump.
If throttle arm is in no fuel position (toward the right), stop cranking. Disconnect electrical connector from
top of hydraulic governor. (This will allow the hydraulic governor to operate in its mechanical mode, free
of any control from governor controller A106.) Recrank engine. If engine starts, then A106 should be
tested and repaired as required (see paragraph 4-11).
If engine still does not start, disconnect one end of linkage between throttle arm and hydraulic governor.
Recrank engine as throttle arm is manually (and slowly) brought toward full fuel position (toward left). If
engine starts hydraulic governor is probably at fault and should be checked and repaired as required
(refer to paragraph 12-2). If engine does not start, the fuel injection pump should be tested and repaired
as required. Adjust in accordance with paragraph 12-3.
2-4
