HYDRAULICS – CX210/CX240
6 - 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 an input signal from the engine controller 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 the unrestricted position. This allows 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 in the six-solenoid valve bank located in the pump compartment.
Cushion OFF Solenoid
Light Green Wire Band
Pilot Pressure Solenoid
Blue Wire Band
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