Komatsu PC20R-8 Shop Manual page 107

SOLENOID VALVE
ST1 SERVOCONTROL (TRAVEL INCREMENT)
a
a. S Port - To accumulator
b. A Port - To PPC valve (P port)
c. B Port - To swivel joint (G port)
d. P Port - From control valve (P
e. T Port - To hydraulic tank
PC20R-8 PC27R-8
b
1
port)
i2
c
2
1. Y2 Servocontrol
2. Y1 Travel increment
e
d
RKP00810
10-89