MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
38
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 2-8-4 Checking the connection between
the turbocharger and the diesel engine
Fig. 2-8-5 Measuring the electrolyte specific
gravity
Fig. 2-8-6 Measuring the battery voltage
(3) Check if there is oil, water, air or electricity leakage,
remove them if the ―four leakages‖ are found.
(4) Check if various accessory devices are fastened.
(5) After starting the engine, listen if the engine is running
properly, and check the working conditions of
instruments, they should be fixed or replaced if
damaged.
(6) Keep the diesel engine clean, especially pay attention
to that there should be no oil stains on the electrical
equipment and no foreign material on the radiator of
water tank.
(7) inspect and tighten the connection between the
turbocharger and diesel engine (see Fig. 2-8-4), remove
the malfunctions such as oil leakage, air leakage and so
on, and keep the surface of turbocharger clean.
Caution:
If the diesel engine works in a dusty
condition, the air cleaner should be cleaned everyday to
ensure a good working condition for the air cleaner.
2.2 First class technical maintenance
On the basis of fulfilling daily maintenance content, the
following maintenance content should be added after the
diesel runs for 100h or the vehicle travels for
4000~5000km:
(1) Check the battery electrolyte specific gravity (see Fig.
2-8-5) or battery voltage (see Fig. 2-8-6).
(2) Check the appearances (wear conditions) of timing
belt and generator belt.
(3) clean the air cleaner,
(4) Check if diesel engine is fastened.
2.3 Second Level Technical Maintenance
It includes the first level technical maintenance contents.
The following maintenance contents should be added
after the diesel engine runs for 250 h or the vehicle
travels for 10000 ~ 12500 km(for new engines or the
second level maintenance for the first time after
overhauling in the third level maintenance, the
maintenance time should be advanced to 100 h or 4000
~ 5000 km).
(1) Replace the engine oil.
(2) Replace filter cores of the fuel filter, oil filter and air
cleaner.
(3) Inspect the dripping condition of the water pump
overflow, replace the water pump if serious dripping is
found.
(4) Inspect if the connectors of the electrical equipment
turbocharger
Rubber ball
Rubber pipe
Gravimeter
core
Glass tube
Storage
battery
Electrolyte
Voltmeter
Electric resistance
Discharge tongs
contact pin
Storage
battery
