Hitachi ZW180 Technical Manual page 121

SYSTEM / Hydraulic System
Bucket Cylinder
Steering Cylinder
Lift Arm
Cylinder
Steering Valve Control Valve
Hydraulic
Oil Tank
Bucket
Spool
Hydraulic
Oil Tank
Lift Arm
Hydraulic
Oil Tank
Spring
Priority
Valve
Orifice 2
Orifice 1
Orifice 3
LS 1
Spool
LS 2
At Stop of Engine
Main Pump
T4GB-02-02-011
NOTE: This illustration shows oil flow without
operation while the engine is running.
T2-3-5