Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
and check fuel level from the fuel gauge or check the fuel tank.
(3) Check the engine oil level
The engine oil level shall be between upper and lower markings of the oil dipstick. If
necessary, add engine oil through the engine oil filler port.
(4) Check all accessories of diesel engine for reliable connections and solve any
abnormal phenomenon. Check the starter system for normal wiring and check and
ensure that the battery is sufficiently charged. Open the valve fuel tank. Loosen the
bleeding screw of the fuel coarse filter. By operating the manual pump, bleed air
from the fuel coarse filter.
1.8 Start of Diesel Engine
Adjust the throttle of the diesel engine to an appropriate position. If the environmental temperature is
≤5ºC, the opening extent of the throttle can be increased appropriately. Press the starter button to start the
To prevent the damage of starter motor, do not run the starter motor continuously
engine.
for >15s. If the diesel engine fails to start in 15s, wait for 2min before retry. If the engine
can't be started by three consecutive attempts, stop the attempt and find out and solve the
malfunction before retry.
After the start of diesel engine, observe the readings of the instruments and keep the
engine idling. In such case, the engine oil pressure shall be no less than 120kPa. Do not idle
the engine for a long time.
The auxiliary starter shall be used to start the diesel engine under cold temperature. By
running the electric heating device via intake, the engine can start successfully under -30ºC
environment.
1.9 Running of Diesel Engine
After the start of diesel engine, idle the engine for (2~3) min. The engine oil pressure
shall be higher than 120kPa. When the coolant temperature is less than 60ºC, do not run the
engine immediately at high speed under heavy-load, otherwise the wear resistance and
reliability of the engine will be impaired. Apply load and increase the speed gradually. Avoid
the sudden loading and unloading whenever possible.
In the run-in period (3000km), the diesel engine is better to run under a moderate load.
Normally the diesel engine can continuously run with rated output and rated speed. The
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