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HYDRAULIC CIRCUIT
CASE TRAINING CENTER
AUGUST 2000
Low Speed Travel Circuit
This is a normal travel pattern. Even the travel status is in high speed, if the key switch is turned OFF and
turned ON again, the speed setting will always return to Low Speed.
Discharged oil from A1 enters into the PR port of control valve entry while discharged oil from A2 enters
into the PL port of control valve entry. Each flow goes into the travel motor through the changing over of
the left and right travel spool. By these flows, the machine travels forward and backward. The 2 speed
travel solenoid valve is turned OFF, the hydraulic oil in D port of the travel motor is connected to the tank
line.
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