Hitachi ZW180 Technical Manual page 197

Pump Torque
Control Pressure
ST
Pump Torque
Control Pressure
ST
COMPONENT OPERATION / Pump Device
Pump
To Hydraulic
Control
Oil Tank
Pressure Pi1
Own Pump
Pressure Pd1
10
Pump
Control To Hydraulic
Oil Tank
Pressure Pi1
Own Pump
Pressure Pd1
10
Primary Pilot
3
Pressure Pg
11
Primary Pilot
3
Pressure Pg
11
T3-1-9
2 4 1
Pump
Control Pressure
Pi2
13
2 4 1
Pump
Control Pressure
Pi2
13
12
T4GB-03-01-008
12
T4GB-03-01-009