Yanmar 4JH3-TE Series - 5 Trouble and Troubleshooting

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GB
5. Trouble and Troubleshooting
Trouble Probable Cause Measure Reference
Alarm Buzzer and Alarm
Lamps On During
Operation
Eng.Lube Oil Press.
Warning Lamp goes on
C.W.Temp.(Fresh Water)
warning lamp goes on
Faulty Warning Devices
C.W. Level Alarm Lamp
goes on
Fuel Filter Alarm Lamp
goes on
Exhaust Alarm Lamp goes
on
One of the warning lamps
does not go out
Charge lamp does not go
out during operation
(Buzzer does not sound)
Engine Lube Oil insufficient;
Fuel filter clogged.
Insufficient water in fresh water cooler.
Insufficient seawater causing temp. to
rise.
Contamination inside cooling system.
Insufficient cooling water in fresh water
tank.
Increased fuel filter drain.
Insufficient discharge of cooling
seawater.
Damaged cooling seawater pump.
Sensor switches faulty.
V-belt is loose or broken.
Battery defective.
Alternator power generator failure.
Check Lube Oil level.
Replenish or replace.
Check cooling water and replenish.
Check seawater system.
Ask for repairs.
Check and replenish fresh cooling
water.
Drain the fuel filter.
Kingston cock is closed.
Kingston cock is clogged.
Suction hose is damaged or joints
are loose.
Check seawater pump impeller.
Ask for repairs.
Replace V-belt; adjust tension.
Check fluid level, specific gravity;
replace.
Ask for repairs.
3.2.3
4.3.1(1)
3.2.5
3.2.5
4.3.2(1)
4.3.3(7)
4.3.1(3)
4.3.2(4)
*Note: Other warning lamps do not go on when the switch is turned on. They only go on when there is an abnormality.
Shift to low speed operation immediately, and check which lamp has come on. Stop
the engine for inspection. If no abnormality is identified and there is no problem with
operation, return to port at your lowest speed and request repairs.
NOTICE
Do not operate the engine if alarm devices are not repaired.
Serious accidents may result if difficulties are not spotted due to faulty alarm lamps.
When switch is turned ON:
Alarm buzzer does not sound. Circuit broken or buzzer defective. Ask for repairs.
NOTICE
5.1 Trouble and Troubleshooting
JH-Turbo-Engels1b 28-06-2002 19:56 Pagina 43