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 marking 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

Function

Symbol

Latching

Permanent oil circulation

Momentary

Oil circulation until action is executed

Floating

Free oil flow in the tractor control unit

Marking

Function

Tractor control unit

Green

Coulter pressure

Seed rate increase

Exact following harrow pressure

Coulter lift-out

Increase

Double-acting

Reduce

Yellow

Not required in conjunction with track markers.

Tramline marker

Lifting

Single-acting

Blue

Exact following harrow lift-out

Lowering

Double-acting

Lifting

Red

Pressure relief through 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.
  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.