Table of Contents
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10 Structure and function
Electrical control system
Travel control function
(PC88MR-C7H1-042-K-00-A)
1. Pump controller
2. Engine controller
3. Machine monitor
4. Fuel control dial
5. Fuel supply pump
6. Various sensors
7. Oil pressure sensor of pump
8. Oil pressure sensor
9. Travel alarm
10. Main pump
11. Control valve
11a. Merge-divider valve
11b. Self-pressure reducing valve
12. Travel motor
13. 2-stage travel speed selector solenoid valve
14. Travel junction/ pump merge-divider solenoid valve
Input/output signal
a. Oil pressure sensor signal
b. CAN signal
c. Travel junction/ pump merge-divider solenoid valve drive signal
d. 2-stage travel speed selector solenoid valve drive signal
e. Oil pressure sensor signal
f. Travel alarm operation signal
g. Throttle signal
PC88MR-10
10-189
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Troubleshooting
