51
that you need, screw back the screw of the LS overflow and keeps its pressure on
200 bar.
Fig.8-3 Control Valve
(4) Pilot Joystick
The control valve is opened by the pilot pressure controlling. Human factors
engineering is used in the Joystick. So it is very comfortable to operate for the driver.
It is be of following advantages:
------It is be of responds well
------Operating force is small
------Operating feeling that make for comfort
The principle of pilot pressure controlling is not complex. Delivery pressure of
the Pilot joystick and its displacement became proportional. The pressure pushes up
the main valve spool and drives it to move .As we all know, displacement of the main
valve spool and Joystcik is proportional. The speed and flow of the working service is
controlled by Joystick.
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