HYDRAULICS – CX210/CX240
6 - 2
CX EXCAVATORS
TRAVEL
Operation Function Explanation
Low Speed
Travel
1) The swash plate angle of the travel motors is shifted
to maximum angle.
See pages
6-7
High Speed
Travel
1) The Travel Speed solenoid is energized and the
swash plate angle of the travel motors is shifted to
minimum angle, high-speed travel occurs.
2) The travel motors will switch to low-speed
automatically when the travel pressure reaches
approximately 4200 psi and switches back to high-
speed when the travel pressure is reduced.
See pages
8-11
Straight Travel 1) When performing travel operation + attachment
operation or travel operations + swing operation, one
pump is dedicated to the travel motors. The other
pump will supply oil to the other functions.
See pages
12-15
SWING
Operation Function Explanation
Swing
Operation with
Brake
1) Only one pump is used for swing operation.
2) The upper structure is braked hydraulically when the
supply and return ports are blocked at the control
spool. A crossover relief built-in to the swing motor
protects the swing motor from pressure spikes.
3) Swing mechanical brake is applied 5 seconds after
swing lever is returned to neutral position.
See pages
16-19
Swing Lock 1) When the Swing Brake switch is pressed the Swing
Brake solenoid is energized and the brake is applied.
2) The Swing Shutoff solenoid is energized and the
swing control spool is locked in neutral.
See pages
20-21
Swing Priority 1) When swing and arm is used at the same time swing
supply will have priority over arm.
See pages
22-23
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