Hitachi ZW180 Technical Manual page 311

Front View of Transmission
1 - Breather
2 - Control Valve
COMPONENT OPERATION / Drive Unit
4
A
5
6
7
3 - Oil Feed Port
4 - Charging Pump
1
B
B
C
C
A
5 - Rotation Sensor (A)
6 - Rotation Sensor (B)
T3-9-5
2
3
7 - Travel Speed Sensor
T4GD-03-09-003