Operation Manual of WEICHAI GENSET
Caution! Coolant shall be added slowly,
so that the residual air in the engine
cooling system can be exhausted.
Caution! Check the coolant level, and it
is preferably within 5 cm below the
filler cap.
3) Check the reliability of fasteners
and throttle adjusting system, confirm
that each operating mechanism is
flexible, light and reliable, and check
the pre-tightening condition of water
pump belt, charger belt and fan belt.
4) Check all electrical circuits to see if
there is any potential electric leakage
in the wire harness due to broken
insulation layer and aging, and replace
the wires when necessary. Check
whether the joint is loose or damaged,
and tighten or replace it when
necessary.
5) Check the blockage indicator of
the air filter, and replace the filter if it
indicates blockage.
6) Check the pipelines of and joints
between oil supply, lubrication and
cooling systems of the diesel engine for
oil or water leakage.
3) Check the belt tension
4) Clean the air filter element
The maximum allowable intake
resistance of diesel engine is 3.5 kPa,
and the maximum intake resistance of
diesel engine must be inspected with
the engine running at rated speed and
under full load. When the intake
resistance reaches the maximum
allowable value, the filter element shall
be cleaned or replaced in accordance
with the provisions of the
manufacturer.
Caution! It is prohibited to operate the
engine without air filter; otherwise
entrance of dust or foreign matters into
diesel engine will result in premature
wear of engine.
Fig. 5-2 Air filter structure
Technical maintenance after
working for 250 h
In addition to the work items of "Daily
technical maintenance", the following
work shall be performed:
1) Replacement of lubricating oil and
filter
Operate as described in "Lubrication
system" of this chapter.
2) Replace the fuel filter
Operate as described in "Fuel system"
of this chapter.
Remove the air filter element from the
air filter. Pat the end face to make dust
fall, or blow back with compressed air
(blow from inside to outside) as shown
in Fig. 5-3.
Fig. 5-3 Cleaning air filter
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