Trouble And Troubleshooting; Simple Problems And The Appropriate Countermeasures - Yanmar 6LPA-DTP Operación Manual

6. TROUBLE AND TROUBLESHOOTING

6.1 Simple problems and the appropriate countermeasures

If you should encounter some difficulty during operation, refer to the following table for counter-
measures.
Trouble
Problem occurs during
operation.
■Alarm buzzer sounds and
alarm lamps come on.
●Charge Lamp
(Alarm buzzer does not sound.)
●C.W. Temp. Lamp goes on.
●L.O. Press. Alarm Lamp goes on. Insufficient engine oil
●C.W. Level Alarm Lamp goes on. Insufficient cooling water in fresh water tank
●Gear Oil Alarm Lamp goes on.
●Boost Press. Alarm Lamp goes on.
●Fuel Filter Alarm Lamp goes on. Increased fuel filter drain
●Exhaust Alarm Lamp goes on.
Faulty Alarm Devices
■Before starting when switch is turned from OFF→ON, alarm devices do not work.
●Alarm buzzer does not sound.
●Some alarm lamps do not light up.
■After starting when switch returns from START →ON, alarm devices do not work.
●Alarm buzzer does not stop. Short circuit
●Some alarm lamps do not go out. Damaged sensor or switch
Probable Cause
[ NOTICE ]
When the alarm equipment indicates a problem, immedi-
ately put the clutch in neutral and run the engine at low speed.
Check to see which alarm indicator is lit, then stop the engine and
inspect. When you cannot determine the source of the problem,
return to port at low speed and ask your Yanmar dealer for repairs.
Faulty battery
V-belt is loose or damaged
Alternator is not generating electricity
Insufficient cooling water in fresh
water tank
Leakage in fresh water cooling sys-
tem
Fresh water cooling pump is damaged
Inside of C.W. system is dirty.
Insufficient drive oil
Boost Press. adjustment device is damaged.
Insufficient discharge of cooling
seawater
Damaged cooling seawater pump
[ NOTICE ]
Do not operate the engine if alarm devices are not working properly.
Serious accidents may result if difficulties are not spotted due to
faulty alarm lamps.
Circuit broken or buzzer damaged Ask for repairs.
Circuit broken or lamp burnt out.
_ 47 _
Measure
Check battery fluid.
Adjust V-belt tension or
replace belt.
Ask for repairs.
Check and replenish cooling
water.
Ask for repairs for water
leakage.
Ask for repairs.
Ask for repairs.
Replenish engine oil.
Check and replenish fresh cooling water. 4.1(5)
Replenish drive oil.
Ask for repairs.
Drain water separator.
Kingston cock is closed.
Kingston cock is clogged.
Suction hose is damaged or
joints loose
Check seawater pump impeller. 5.2.6(1)
Ask for repairs.
Ask for repairs.
Ask for repairs.
Reference
5.2.2(3)
5.2.5(1)
3.5
3.3
3.4
5.2.2(2)
2.5.1(2)
2.5.1(2)