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The oil pressure of the gearbox should be controlled by pressure control valve,
the normally manipulated oil pressure is 15-17bar and the main oil pressure will be
decrease at the moment of shifting, which is resulted from the oil filling in oil cylinder
of clutch. The oil pressure should return to the normal after shifting and if the oil
pressure is lower than the value stipulated, it will result in the slippage and heating of
friction lining of clutch, finally burning and damaged . Therefore, the forklift must be
stopped for examination and used again after the trouble is eliminated..
(4) Oil changing
The oil in the gearbox should be changed at regular intervals, after100 hours of
working for the first use, then change once every 100 hours. But the oil should be
changed at least once for a year and oil level control for filling should follow the
method in section 5.1 of this article.
The filter or filter element should be changed each time when oil is changed, the
mesh size of the filter element is 0.025mm, the minimum filtration area 5100cm and
the flow of the oil filter is about 100dm/min.
(5) Electrical welding
When the lifter needs welding, all the electrical elements of gearbox must be
unplugged and disconnected with the electrical system of it, or it will lead to the
damage of the electrical elements of gearbox.
As for other detailed content, refer to the document of the gearbox attached
with the forklift.
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