70
W9272-8135-1
05/2020
Assembly and functions
Hydraulic system
All controls enable the functions via a hydraulic oil pilot control circuit.
The accumulator allows the boom and the arm to be lowered in case of an engine failure.
The hydraulic oil tank contains the suction filter and the return filter.
1.
Hydraulic oil tank
2.
Control valve
3.
Plug
4.
Air breather
5.
Pilot circuit filter
6.
Sight glass for hydraulic oil level
Return change valve for direct return flow
According to the mode of operation of a given attachment, the return
flow of the hydraulic oil must occur either via the control valve (indi-
rect return flow) or directly to the hydraulic oil tank (direct return
flow).
The change valve direct return flow (1) is used to toggle the setting
between „indirect return flow“ and „direct return flow“. The return
change valve for direct return flow (1) is located under the valve
chamber on the right-hand side of the vehicle.
4
4
3
3
5
5
6
6
1
1
2
2
1
1
Summary of Contents for U50-5
Page 1: ...GB COMPACT EXCAVATOR MODEL U50 5 OPERATING INSTRUCTIONS W9272 8135 1 Original 05 2020...
Page 38: ...36 W9272 8135 1 05 2020 Safety rules...
Page 54: ...52 W9272 8135 1 05 2020 Description of the machine...
Page 74: ...72 W9272 8135 1 05 2020 Assembly and functions...
Page 164: ...162 W9272 8135 1 05 2020 Operation...
Page 222: ...220 W9272 8135 1 05 2020 Maintenance...
Page 224: ...222 W9272 8135 1 05 2020 Safety inspection...
Page 234: ...232 W9272 8135 1 05 2020 Software information...
Page 235: ...Software information W9272 8135 1 233 05 2020...
Page 236: ......