HYDRAULICS – CX210/CX240
6 - 4
CX EXCAVATORS
FEATURES
Operation Function Explanation
Automatic
Power Boost
1) When main pump pressure reaches approximately
4350 psi and the load ratio fluctuation of the engine is
±5% for two seconds. The controller will energize the
power boost solenoid and increase main relief
approximately 8%.
2) This power boost increase will occur for 8-second
intervals.
3) Power boost is on full time in L mode.
See pages
38-39
Main Relief
Valve
The Main Relief has two adjustments:
1) Standard Main Relief pressure
2) Power Boost Pressure
See pages
40-41
Neutral Pump
Destroke
(negative flow
control)
1) If the flow output of pump1 or pump2 is not needed
the output is kept at a minimum flow rate (negative
control flow rate), and energy consumption is
reduced.
See pages
42-43
Free Swing
Operation
1) An orifice leak is opened between the A and B ports
of the swing motor. This will provide smoother starts
and stops of the swing during hoisting operations.
See pages
44-45
OPTIONS
Operation Function Explanation
Auxiliary
hydraulic kits
There are three auxiliary hydraulic options.
1) Hammer kit (one direction, one pump flow)
2) Multi-kit (two direction or one direction flow, one
pump or two pump flows)
3) Thumb kit (two direction one pump flow)
See pages
46-47
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