Komatsu PC500LC-10R Shop Manual page 257

10 STRUCTURE AND FUNCTION
MERGE-DIVIDER VALVE OF CONTROL VALVE
FUNCTION OF MERGE-DIVIDER VALVE OF CONTROL VALVE
When pumps are merged "when merge-divider valve selector signals (IS1) and
(IS2) are OFF"
Arm side
(Front Pump)
5 8 A
To control valve
To control valve
1: Main spool
2: Spring
3: LS spool
4: Spring
5: LS circuit (arm side)
1: Main spool
2: Spring
3: LS spool
4: Spring
5: LS circuit (arm side)
• This valve merges the pressurized oil (P1) and (P2) discharged from two pumps, or divides them (to each
control valve groups).
• This valve merges or divides the LS circuit pressure.
PC500LC-10R
Connected
Connected
B C D 3
E
COMPONENT PARTS OF HYDRAULIC SYSTEM
IS2
OFF
Bucket side
(Rear Pump)
4 7 6
0 1
F
P1 P2
6: LS circuit (bucket side)
7: LS circuit (bucket side)
8: LS circuit (arm side)
9: Merge-divider EPC valve (for selecting main spool)
10: Merge-divider EPC valve (for selecting LS spool)
6: LS circuit (bucket side)
7: LS circuit (bucket side)
8: LS circuit (arm side)
9: Merge-divider EPC valve (for selecting main spool)
10: Merge-divider EPC valve (for selecting LS spool)
IS1
OFF
PC200-8
2 x EPC valve
9
1
2
AEP21617
10-163