Hitachi ZW180 Technical Manual page 199

Control Pressure
Pump Torque
Control Pressure
ST
Pump Torque
Control Pressure
ST
COMPONENT OPERATION / Pump Device
Pump
To Hydraulic
Pi1
Oil Tank
Own Pump
Pressure Pd1
10
Pump
Control To Hydraulic
Pressure Pi1 Oil Tank
Own Pump
Pressure Pd1
10
Primary Pilot
3
Pressure Pg
11
Primary Pilot
3
Pressure Pg
11
T3-1-11
2 4 1
Pump
Control Pressure
Pi2
13
2 4 1
Pump
Control Pressure
Pi2
13
12
T4GB-03-01-010
12
T4GB-03-01-011