MAINTENANCE MANUAL OF ENGINE
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17. The engine oil temperature is too high
Steps
Inspection
position
Fault causes
Troubleshooting
1
Engine oil
The engine oil level is too low or the oil
grade is inappropriate.
Fill engine oil with appropriate
viscosity and above grade CD to
the specified level (5L-6L) as per
the environmental temperature.
2
Engine oil
pressure value
The oil pressure is not within (200-400)
KPa
Refer to the troubleshooting for
the fault of “No engine oil pres-
sure or low pressure”.
3
Piston, cylin-
der liner, pis-
ton ring and
piston pin
The piston ring is air-leaked, the piston
and cylinder liner are worn excessively,
and the gas goes into the crankcase.
Change the piston, cylinder liner,
piston ring and piston pin (Refer
to the Chapter 1 and 2, Part II)
18. High engine oil consumption
Steps
Inspection
position
Fault causes
Troubleshooting
1
Engine oil
The engine oil grade is inappropriate.
Select a kind of engine oil with
appropriate viscosity and above
grade CD as per the environment
temperature.
2
Piston, cylin-
der liner
The piston and cylinder liner are worn ex-
cessively, and the engine oil goes into the
cylinders to cause oil consumption.
Repair the piston ring, piston and
cylinder liner (Refer to Section 4,
Chapter 2, Part II).
3
Piston ring
The gas ring is installed in a reverse manner,
and worn excessively, and the oil goes into
the combustion chamber.
Re-install or replace (Refer to
Section 4, Chapter 2, Part II)
4
Oil seal
The front oil seal or rear oil seal of the
crankshaft is damaged, and subject to oil
leakage.
Replace
5
Gaskets of the
whole engine
There is oil leakage from the mating faces of
the oil pan, gear chamber and etc.
Replace
Summary of Contents for KM/4L22
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