Hitachi ZW180 Technical Manual page 201

Control Pressure
5
Pump Torque
Control Pressure
ST
5
Pump Torque
Control Pressure
ST
COMPONENT OPERATION / Pump Device
Pump
To Hydraulic
Pi1
Oil Tank
Own Pump
Pressure Pd1
10
Pump
To Hydraulic
Control
Oil Tank
Pressure Pi1
Own Pump
Pressure Pd1
10
Primary Pilot
Pressure Pg
11
Primary Pilot
Pressure Pg
11
T3-1-13
6 7
Pump
Control Pressure
Pi2
8 9
13
6 7
Pump
Control Pressure
Pi2
8 9
13
12
T4GB-03-01-012
12
T4GB-03-01-013