3. Troubleshooting
102
(I) Fuel oil supply cut off
(II) Governor trouble
(III) Emergency stoppage device in operation
(IV) Miscellaneous
No. Cause and effect Countermeasure
1 Insufficient oil in fuel oil tank. Add fuel oil and prime.
2 Air in fuel oil system and fuel injection pump. Bleed air.
3 Water in fuel oil tank. Remove water from drain and fuel oil system and
prime.
4 Fuel oil cock closed. Check and make necessary repairs.
5 Clogging of fuel oil filter. Clean.
6 Damage in fuel oil system. Replace.
7 Problem with fuel feeding pump. Check and make necessary repairs.
No. Cause and effect Countermeasure
1 Damage to governor spring. Replace.
2 Sticking of governor sleeve. Clean carefully to insure good working order.
No. Cause and effect Countermeasure
1 Loose lube oil pressure adjustment valve. Tighten adjustment valve.
2 Clogging of lube oil filter. Clean.
3 Leakage from lube oil safety valve. Tighten safety valve.
4 Trouble with lube oil pump. Remove and repair or replace.
5 Relay operation triggered by low lube oil pressure. Return to original condition.
No. Cause and effect Countermeasure
1 Seizure of moving parts. Remove and repair or replace.
2 Overloading due to insufficient coolant. Disassemble and clean cooling water pump and
check coolant system.
THE ENGINE SUDDENLY STOPS
(I) Fuel oil supply cut off
(III) Emergency stoppage
device in operation
(IV) Miscellaneous(II) Governor trouble
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