Diesel Gen-set Operation Instructions
85
controller, oil pressure sensor replace them if necessary.
2 Machine oil is insufficient. Fill machine oil.
3
Viscosity of machine oil decreases due to
high temperature, which reduces oil
pressure.
Clean cooling system and oil cooler.
4
Leakage of lubricating oil circuit of diesel
engine
Replace the leaking part.
5 Blocking of oil filter
Clean the oil filter, and replace filter
element if necessary.
6 Suction filter of oil pump is blocked. Clean the suction filter.
7
The machine oil goes bad or is mixed with
other liquids, which decreases viscosity
and thereby reducing oil pressure.
Replace machine oil with method in
instructions.
8 Oil pump capacity is insufficient. Replace oil pump.
9
Fit clearance between crankshaft and
bearing is too big due to wear and tear
after long-term use.
Replace main bearing and connecting rod
bearing.
6. High coolant temperature
Serial
number
Cause Elimination method
1 Coolant is insufficient. Fill coolant to 5cm below the tank cover.
2 Fault of water pump
Contact with after-sales service personnel
to repair or replace.
3 Fault of thermostat
Contact with after-sales service personnel
to repair or replace.
4 Hose is damaged. Replace the connecting hose.
5 Radiator is blocked.
Clean the radiator. (See Chapter 9 for
method)
7. Fuel consumption is too high
Serial
number
Cause Elimination method
1 Fault of fuel injector
Contact with after-sales service personnel
to repair or replace.
2 Poor quality of diesel Select fuel of appropriate trademark.
3 Air intake system is blocked.
Clean intake manifold and air filter, and
replace them if necessary.
4 Exhaust back pressure is too high.
Clear the carbon deposit in exhaust
manifold and silencer.
5 Turbocharger is dirty. Clean the turbocharger.
6 Oil supply system is blocked.
Inspect and replace fuel filter, sealing
gasket and oil supply line.
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