Komatsu PC200-8M0 Shop Manual page 174

SEN06120-00
Merge-divider valve
When oil flowing from two pumps are merged [pump merge-divider valve changeover signals (IS1)
and (IS2) are OFF]
1. Main spool
2. Spring
3. LS spool
4. Spring
5. LS circuit (for bucket valve)
6. LS circuit (for bucket valve)
7. LS circuit (for arm valve)
8. LS circuit (for arm valve)
9. Pump merge-divider EPC valve (for main spool changeover)
10. Pump merge-divider EPC valve (for LS spool changeover)
Function
q This valve merges the pressurized oil (P1) and
(P2) from the two pumps or divides them
(enables them to flow to respective control
valve groups).
This valve merges or divides LS circuit pres-
q
sures as well.
32
10-402
402 Hydraulic system, Part 2
Functions and operation by valve
Operation
q Since drive signal (IS1) of the EPC valve for
the main spool is OFF, the output pressure of
the pump merge-divider EPC valve is 0 MPa {0
2
kg/cm }.
Main spool (1) is pressed to the right by spring
q
(2). As a result, ports (E) and (F) are intercon-
nected.
PC200, 200LC, 220, 220LC-8M0