Xinchai 490B Series Manual page 27

3.3 Technical maintenance in winter
吟 Please pay special attention to maintenance of the engine when the temperature is
below 5 益.
1尧 Oil and fuel for winter application should be used. Closely watch water content in
the fuel to avoid fuel pipes being plugged.
2尧 It's better to fill antifreeze in the cooling system. Or the cooling water should be
drained out when the water temperature goes below 40-50益 after the engine is shut down.
3尧 It's better not to park the vehicle in the open air in the cold season or cold regions.
Otherwise, when start the engine, it is necessary to heat up the cooling water and warm up
the engine first and use the air heater. If you get these jobs done, the engine can be started
in cold regions.
Maintenance records:
Work time
50
125
375
625
875
3.4 Storage of the Engine
1)尧 If the engine will not be used for a long time, the oil, cooling water and fuel should
be drained out while the engine is still warm and clean the oil sump and screen filter.
2)尧 Do relevant technical maintenance.
3)尧 Dismantle the intake and exhaust manifolds. Fill every cylinder with 200g clean oil
which is dehydrate treated through inlet and exhaust ports, and turn the crankshaft to
make the oil uniformly adhere on the surfaces of the parts such as valves, cylinder liners
and pistons.
4)尧 Wipe away any oil, water traces and dust off the engine surfaces. Smear
anticorrosion oil on the components which are not painted. Don't smear rubber and plastic
parts.
5)尧 Outlets of water pipes, intake and exhaust manifolds and muffler should be plugged
by wood plugs or wrapped with plastic film.
6)尧 The engine should be stored in a dry and clean place with good ventilation. It's
prohibited to put chemicals near the engine.
Note: In this way the engine can be well stored for three months. Beyond this period,
the above procedures should be repeated.
Signature/
Date
stamp
Work time Date
250
500
750
噎噎
Signature/
stamp
23
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