LiuGong CLG835H, Service Manual

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January 24, 2017 Structure Function Principle
CLG835H Hydraulic cooling system
Overview - working principle of hydraulic cooling system
Oil line of fan rotation clockwise:
Working principle:
When the solenoid directional valve is not
energized, under action of spring force, it works
in left position. High pressure oil from cooling
pump flows into the port B of cooling motor via
solenoid directional valve. The oil in port A of
cooling motor enters into radiator via the
solenoid directional valve to achieve clockwise
rotation of fan.
Principle of fan reverse rotation:
Working principle:
When the solenoid directional valve is energized,
under action of electromagnetic force and
standing the spring force, it works in right
position. High pressure oil from cooling pump
flows into the port A of cooling motor via solenoid
directional valve. The oil in port B of cooling
motor enters into radiator via the solenoid
directional valve to achieve reverse rotation of
fan.
P18H00056 P18H00057