Hitachi ZW180 Technical Manual page 261

Pusher Stroke: Between A and B
1 - Lever
2 - Push Rod
COMPONENT OPERATION / Pilot Valve
Port T
Port P
7
Output Port
T4GD-03-06-002
3 - Pusher
4 - Spring Guide
1
2
3
4
5
6
（A）
Notch Part
5 - Balance Spring
6 - Return Spring
T3-6-3
(Clearance of
Part A: 0)
T4GD-03-06-003
7 - Spool