Table of Contents
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10 Structure and function
Electrical control system
Oil flow adjuster function for attachment
(PC88MR-PT24-042-K-00-A)
(Machines ready for installation of attachment)
1. Pump controller
2. Engine controller
3. Machine monitor
4. Fuel control dial
5. Fuel supply pump
6. Various sensors
7. Pump secondary drive switch
8. 1st-line attachment proportional switch
9. 2nd-line attachment proportional switch [European specification (if equipped)]
10. Breaker operating switch
11. Main pump
11a. Servo
11b. LS valve
11c. PC valve
12. Control valve
12a. Merge-divider valve
12b. Self-pressure reducing valve
13. PPC lock solenoid valve
14. 1st-line attachment flow adjustment EPC valve
15. 2nd-line attachment flow adjustment EPC valve [European specification (if equipped)]
16. PC-EPC valve
17. Attachment circuit selector valve
18. Attachment
Input/output signal
a. 2nd-line attachment flow adjustment EPC valve drive signal
b. 1st-line attachment flow adjustment EPC valve drive signal
c. Switch potentiometer signal
d. Breaker operating switch signal
PC88MR-10
10-201
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