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10 STRUCTURE AND FUNCTION
When pilot pressure (BP) is supplied
1.
When pilot pressure (BP) is supplied, it moves piston (3) to
the right against the reaction force of spring (2).
2.
When piston (3) moves to the right, valve (1) disconnect
port (A) from port (B).
3.
Since port (A) is disconnected from port (B), swing LS
pressure (P1) does not flow to LS shuttle valve (8).
4.
Even swing LS pressure (P1) increases, it does not affect
other LS circuits.
SELF-PRESSURE REDUCING VALVE OF CONTROL VALVE
FUNCTION OF SELF-PRESSURE REDUCING VALVE OF CONTROL VALVE
This valve reduces the discharged pressure of the main pump and supplies it as control pressure to the solenoid
valves, EPC valves, etc.
PC500LC-10R
COMPONENT PARTS OF HYDRAULIC SYSTEM
4
3
2
BP
u ON v
8
AEP21621
1
B
A
5
Swing
P1
6
P2
7
P3
9
AEP21619
10-167
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