Operation
7.10 Operating the rear hydraulic connections
142
Operator’s Manual | 4080T Basic Line | 1000408123 | 05/2019 | [en]
Fig.129: Hydraulic connection Pres-
sureless return flow
The hydraulic connection for pressureless return flow is located on the
loader unit. The design of the hydraulic connection makes it impossible to
confuse it with other hydraulic connections.
Return without pressure
For certain attachments on which components are driven by a hydraulic
oil engine , a pressureless return flow is required. This connection returns
the return oil of the hydraulic oil engine of an attachment directly to the
hydraulic oil tank of the vehicle. The connection for the pressureless re-
turn flow is located at position 1 at the front of the loader unit.
For coupling and uncoupling of pressureless return flow: see Coupling
and uncoupling the hydraulic connections on page 133. This hydraulic
connection does not have to be relieved of pressure for coupling.
7.10
Operating the rear hydraulic connections
7.10.1
Rear hydraulic connections
NOTICE
Soiled hydraulic connections can cause dirt to penetrate into the hy-
draulic system and cause damage!
► Clean hydraulic connections before connecting or disconnecting.
► Seal unused hydraulic connections with protective caps.
► Replace missing protective caps.
The vehicle may be fitted with rear hydraulic connections. Some attach-
ments installed at the rear of the vehicle (e.g. salt spreaders) require hy-
draulic connections at the rear of the vehicle.
Fig.130: Overview of the rear hy-
draulic connections
1 Hydraulic connection for control circuit with sensor function
2 Hydraulic connection for control circuit with sensor function
3 Hydraulic connection for control circuit with engage function (con-
tinuous operation)
4 Hydraulic connection for control circuit with engage function (con-
tinuous operation)
5 Return without pressure
The operation of the hydraulic connections is described in the following
section.
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