Komatsu PC500LC-10R Shop Manual page 242

COMPONENT PARTS OF HYDRAULIC SYSTEM
OPERATION OF PRESSURE COMPENSATION VALVE OF CONTROL VALVE
When load pressure is lower than that of other work equipment during com-
bined operation, or when compensated
1.
Spring chamber (E) is interconnected with port (D).
2.
Piston (4) and valve (2) move in the closing direction (right side) with the LS circuit pressure from other
work equipment of port (F).
3.
The valve upstream pressure (= spool meter-in downstream pressure) at port (B) is controlled by LS pres-
sure.
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10 STRUCTURE AND FUNCTION
PC500LC-10R