HYDRAULICS – CX130/CX160
5 - 36
CX EXCAVATORS
FEATURES
Cushion Operation (OFF) (Boom and Arm)
1) When pilot oil from the cushion solenoid is sent to the cushion valve, the orifices are
shifted out of the circuit and the cushion feature will not function.
Note: The Controller needs a RPM signal for Cushion Off.
During cushion off operation, the dirt release from the attachments is improved by the
sudden stopping (shock) of the arm and boom operations.
When the cushion off button is pressed, a signal is sent to the controller. The controller
sends a 24v signal to the cushion solenoid valve, the valve is shifted and pilot pressure is
directed to the S port of the cushion valve. The pressure that enters the S port shifts the
four-metered valve spools in the cushion valve to allow free flow of the arm and boom control
signals through the valve. This allows the arm and boom control valves to return to neutral
immediately when the control levers are returned too neutral. The cushion off solenoid is
located in the six-solenoid valve bank.
Cushion OFF Solenoid
Light Green Wire Band
Pilot Pressure Solenoid
Blue Wire Band
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