Diesel Gen-set Operation Instructions
82
machine oil is great due to too much
machine oil in oil pan.
machine oil level in oil pan between
high and low levels of dipstick.
12
Exhaust gas turbocharger is blocked or
impeller is damaged.
Clean exhaust gas turbocharger, and
replace it if necessary.
13
Compression pressure of cylinder is
insufficient due to piston ring scuffing.
Replace the piston ring.
14
Leakage of compressed air is caused by
seal leakage of intake/exhaust valve.
Contact with after-sales service
personnel to repair or replace.
15
Valve spring is damaged, making it
difficult for the valve to return.
Contact with after-sales service
personnel to repair or replace.
16
Valve leaks due to incorrect clearance.
Adjust valve clearance.
17
Cylinder gasket is damaged, causing air
leakage of joint surface between cylinder
head and engine body.
Replace the cylinder gasket.
18
Fuel supply advance angle is inaccurate.
Contact with after-sales service
personnel to adjust it.
19
Diesel filter is blocked.
Conduct regular maintenance as required
in instructions.
20
Oil circuit is blocked.
Inspect and clean, and replace if
necessary.
21
Air in the oil circuit causes too great
fluctuation of injection pressure.
Discharge air in low pressure and high
pressure oil circuits with method in
instructions.
22
There is water in oil.
Replace oil, and install oil-water
separator.
23
Matching parts of injector are damaged or
suffer from poor atomization.
Contact with after-sales service
personnel to repair or replace.
24
Oil supply of fuel injection pump is
insufficient or uneven.
Contact with after-sales service
personnel to repair or replace.
25
Max. oil supply limit screw of fuel
injection pump is adjusted inappropriately.
Adjust high-speed limit screw.
26
Oil supply of oil pump is insufficient.
Contact with after-sales service
personnel to repair or replace.
2.
Abnormal noise or vibration of diesel engine in operation
Serial
number
Cause
Elimination method
1
The oil is injected untimely or oil supply of
cylinders is uneven, causing clear and rhythmic
knocking sound of metal in the cylinder, which is
particularly intense in start-up or at low speed.
Adjust fuel supply advance
angle or evenness of oil
supply.
2
Slight rhythmic knocking sound is made due to too
big clearance of intake/exhaust valve.
Adjust valve clearance.
