Operation Manual of WEICHAI GENSET
6. Excessively low pressure of lubricating oil
S/N Fault
Treatment method
1
Defective oil pressure gauge and oil
pressure sensor
Correct the oil pressure gauge and
oil pressure sensor, and replace
them if necessary
2
Insufficient oil
Add oil
3
High oil temperature causes low oil
viscosity, resulting in decrease in oil
pressure
Check the cooling system and oil
cooler
Oil leakage at internal and external
4
lubricating oil passages of diesel Replace the parts with leakage
engine
5
The oil filter is blocked
Replace the engine oil filter.
6
The oil suction pan is blocked
Clean the oil suction pan
Oil deterioration or mixture of other
7
liquids in oil causing decrease of the
viscosity, resulting decrease of oil
Replace oil
pressure
8
Insufficient oil pump capacity
Replace the oil pump
9
Excessive fit clearance between
crankshaft and bearing is due to
wear
Replace the main and connecting
rod bearings
7. Excessively high fluid coolant temperature
S/N Fault
Treatment method
1
There is no or little oil in the oil pan Add oil
2
Insufficient coolant
Add coolant
3
Water pump fault
Contact after-sales service
personnel for repair or replacement
4
Thermostat fault
Contact after-sales service
personnel for repair or replacement
5
Hose damage
Replace the connecting hose
6
Belt looseness
Adjust the tension of the belt and
replace it if necessary
7
The radiator is blocked
Clean the radiator
8. Excessive fuel consumption
S/N Fault
1
Fault of fuel injector
Treatment method
Contact after-sales
62
service
