Komatsu Galeo PC138US-8 Shop Manual page 275

10 Structure, function and maintenance standard
Swing control function
1. Battery
2. Battery relay
3. Fusible link
4. Fuse box
5. Swing holding brake release switch
6. Swing lock switch
7. Pump controller
8. Machine monitor
9. Oil pressure switch
10. Hydraulic pump
11. Control valve
11a. Pump merge-divider valve
11b. Self pressure reducing valve
12. Swing motor
13. Swing holding brake solenoid valve
PC138US, USLC-8
Input and output signals
a. Swing holding brake release signal
b. Swing holding brake solenoid valve drive sig-
nal
c. CAN signal
d. Solenoid valve GND
e. Oil pressure switch signal
SEN02553-01
17