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STRUCTURE, FUNCTION AND MAINTENANCE STANDARD
PARKING BRAKE
1. When starting to travel
Operation
•
When the travel lever is operated, the pressu-
rized oil from the pump actuates counterbalance
valve spool (14), opens the circuit to the parking
brake, and flows into chamber e of brake piston
(20). It overcomes the force of spring (19), and
pushes piston (20) to the right.
•
When this happens, the force pushing plate (10)
and disc (11) together is lost, so plate (10) and
disc (11) separate and the brake is released.
10-98
TRAVEL MOTOR
PC600, 600LC-7
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