Lovol KM/4L22 - No Engine Oil Pressure or Low Pressure; The Engine Oil Pressure Is too High

MAINTENANCE MANUAL OF ENGINE
145
15. No engine oil pressure or low pressure
Steps
Inspection
position
Fault causes
Troubleshooting
1
Engine oil
The engine oil level is too high or low.
Fill engine oil above grade CD to
the specified level (5L-6L) as re-
quired.
2
Engine oil
pipeline
The oil line is blocked or subject to oil
leakage.
Clean or repair
3
Oil filter
The filter is blocked.
Clean or replace
4
Oil pressure
gauge
The indication value is not consistent
with the actual pressure.
Change the engine oil pressure
indicator or oil sensor.
5
Oil pump
It is blocked or aged.
Clean or replace it (Refer to Sec-
tion 4, Chapter 4, Part II)
6
Engine oil
pump safety
valve
Failure or damage
Change the safety valve or adjust
the opening pressure of the safety
valve to 600KPa
7
Engine oil
pump gasket
The gasket is damaged.
Replace
8
Oil passage
The oil passage is blocked.
Cleaning
16. The engine oil pressure is too high
Steps
Inspection
position
Fault causes
Troubleshooting
1
Engine oil
pump safety
valve
The engine oil line is blocked or the
opening pressure is too high.
Repair the opening pressure of the
safety valve to 600KPa.
2
Engine oil
viscosity
The engine oil grade is inappropriate.
Any kind of engine with appropri-
ate viscosity oil is selected as per
environmental temperature.