Coupling hydraulic hose lines

All hydraulic hoses are fitted with handles. The handles have colored markings with code number or a code letter. The markings are assigned to the respective hydraulic functions of the pressure line of a tractor control unit. Stickers that match the markings are affixed on the implement to illustrate the respective hydraulic functions.

The tractor control unit is used in different activation types, depending on the hydraulic function:

Activation type

Hydraulic function

Symbol

Latching

Permanent hydraulic oil circulation

Momentary

Hydraulic oil flow until action is executed

Floating

Free hydraulic oil flow in the tractor control unit

Marking

Function

Tractor control unit

Red

Pump drive

Single-acting

Red

Pressureless return flow

IMPORTANT
Implement damage due to insufficient hydraulic oil return flow
On the tractor side, only use lines that correspond to the nominal width of red T of the implement or larger for the pressureless hydraulic oil return flow.
Select short return paths.
Connect the pressureless hydraulic return flow to the intended coupling, before establishing all other hydraulic connections.

If the implement has a leakage oil line:

couple the leakage oil line in the intended coupling.
Mount the supplied coupling sleeve on the pressureless hydraulic oil return.
  1. Depressurize the hydraulic system between the tractor and the implement using the tractor control unit.
  2. Clean the hydraulic plug connectors.
NOTE

If the hydraulic hose lines are incorrectly connected, the hydraulic functions may be faulty.

  1. Couple the hydraulic hose lines 1 to the hydraulic sockets of the tractor according to the marking 2.

The hydraulic plug connectors lock tangibly.

  1. Route the hydraulic hose lines with sufficient freedom of movement and without chafing points.