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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
2. At high speed (motor swash plate angle at minimum)
Operation
•
When the solenoid valve is energized, the pilot
pressure oil from the control pump flows to port
P, and pushes regulator valve (17) down.
•
Because of this, the main pressure oil and the oil
in chamber d is shut off by regulator valve (17),
and the oil in chamber b is drained inside the
case.
•
A propulsion force generated by the pressure oil
in chamber a of regulator piston (9) then acts up-
ward.
PC600, 600LC-7
•
As a result, valve plate (5) and cylinder block (4)
move in the minimum swash plate angle direc-
tion, the motor capacity becomes the minimum,
and the system is set to high speed.
TRAVEL MOTOR
10-97
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