HYDRAULICS – CX130/CX160
5 - 38
CX EXCAVATORS
FEATURES
One Touch Power Boost
1) When the Power boost button is pressed in H and S mode, the pressure setting of
main relief increases from approximately 4900 psi to approximately 5300 psi and
digging force is increased.
2) This power boost increase will occur for 8-second intervals.
3) Power Boost is on full time in L mode.
Note: The controller needs a RPM signal for Power Boost.
During attachment operation when the one touch power boost is pressed, the setting of the
main relief pressure increases from 4970 psi to 5260 psi and is released after 8 seconds.
When the power boost button is pressed, a signal is sent to the controller and the controller
sends 24v to the power boost solenoid valve. The valve is shifted and directs pilot pressure
to the PY port of the control valve and enters the spring chamber of the relief valve. The pilot
pressure adds to the spring pressure and power boost is achieved. After 8 seconds, the
signal to the power boost solenoid valve is stopped. The power boost solenoid is located in
the six-solenoid valve bank located in the pump compartment.
Power Boost Solenoid
Yellow Wire Band
Pilot Pressure Solenoid
Blue Wire Band
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