HYDRAULICS – CX210/CX240
6 - 6
CX EXCAVATORS
TRAVEL
Low Speed Travel
1) The swash plate angle of the travel motors is set to maximum angle, low-speed travel
occurs. The monitor display will indicate Low-speed (LO).
2) The machine will default to Low-Speed when the machine is started.
Low-Speed is the normal travel speed. When the key switch is set to OFF and then to ON
again, travel mode is always returned to low speed regardless of the last setting. The drive
motor swash plates are at maximum angle for maximum torque.
When the travel pilot valves are operated pilot pressure is sent to the right and left travel
control spools in the main control valve. Oil flow from pump1 (front pump) enters the P1 port
of the control valve and oil flow from pump2 (rear pump) enters the P2 port of the control
valve. When the right and left travel spools are shifted, pump flow is directed to the travel
motors for forward or reverse operation. If travel only is engaged P1 (front pump) will supply
flow to a travel motor and P2 (rear pump) will supply flow to the other travel motor.
The travel motors have spring applied and hydraulically released brakes. The brakes are
released internally by supply pressure.
DRIVE MOTOR
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