MAINTENANCE MANUAL OF GW4D20/GW4D20B TURBOCHARGED DIESEL ENGINES
40
Great Wall Baoding Internal Combustion Engine
Manufacturing Company Limited
Fig. 2-8-10 Checking the generator and
starter
(2) In winter, a suitable fuel (vehicle diesel) grade should
be chosen according to the ambient temperature.
(3) In winter, the lubricating oil for winter use in the
lubricating system should be used.
(4) The concentration of battery electrolyte should be
changed in accordance with the season.
3. Technical Maintenance for Air cleaner
The function of air cleaner is to filter the dust and other
impurities in the air so as to avoid abrasion wear on the
cylinder hole, piston ring, valve and valve seat.
Therefore, the air cleaner should have a high efficiency.
The GW4D20
／
GW4D20B turbocharged diesel engines
are not allowed to operate without an air cleaner,
because this will easily damage the airflow sensor. The
diesel engine cannot operate properly when the airflow
sensor is damaged.
The GW4D20
／
GW4D20B turbocharged diesel engines
may be mounted with the oil bath air cleaners which are
equipped with inertial steel wool filter cores or the paper
filter core air cleaners. The diesel engine for vehicle isn't
equipped with the air cleaner when delivery, it will be
equipped by the vehicle manufacturer, and the airflow of
the selected air cleaner should be no less than 450 m
3
/h.
Fig. 2-8-11 Seasonal technical maintenance
for diesel engine
It is very important to maintain the air cleaner on
schedule, if you don’t do this, the air cleaner will be
blocked by dust and the air intake resistance will be
increased, which will cause smoking when the diesel
engine is operating, power decrease and early wear of
the engine. The user is required to maintain the air
cleaner regularly in strict accordance with the vehicle
application and maintenance instruction.
3.1 Maintenance for Oil Bath Air Cleaner
Generally, a diesel engine vehicle which is equipped with
the inertial steel wool filter core air cleaner should be
washed per 4000 ~ 5000 km of traveling distance, and
the distance may be changed upon the density of dust in
the environment. Take out the steel wool and put it in the
degreaser or parts cleaner to wash it, dry it by using
compressed air after washing. Meanwhile, clean the oil
bath of air cleaner, fill a proper amount of new oil in the
oil bath.
Attention:
Use professional greaser or parts cleaner
but not petrol when washing the parts,.
3.2 Maintenance for Paper Core Air Cleaner
Generally, for the vehicle equipped with a diesel engine,
the dust in the housing of air cleaner should be removed
Generator
Generator
oil
Anti-freeze/an
ti-rust fluid
Storage battery
diesel
