Coupling the hydraulic hose lines

All hydraulic hoses are equipped with handles. The handles have colour markings with a 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 are applied on the implement for the markings, which illustrate the respective hydraulic functions.

The tractor control unit is used with different types of actuation, depending on the hydraulic function:


Type of actuation	Function	Symbol
Latching	Permanent oil circulation
Momentary	Oil circulation until action is executed
Floating	Free oil flow in the tractor control unit


Designation	Function			Tractor control unit
Green		Pre-selection on the control terminal: Folding the implement	Unfold	Double-acting
Green			Fold	Double-acting
Green		Pre-selection on the control terminal: Coulter pressure	Increase	Double-acting
Green		Pre-selection on the control terminal: Coulter pressure	Reduce	Double-acting
Green		Pre-selection on the control terminal: Coulter lift	Lifting	Double-acting
Green		Pre-selection on the control terminal: Coulter lift	Lowering	Double-acting
Beige		Working depth of the tool tines	Increase	Double-acting
Beige		Working depth of the tool tines	Reduce	Double-acting
Yellow		Track marker	Unfold	Double-acting
Yellow		Track marker	Fold	Double-acting
Yellow Not required in combination with track marker.		Tramline marker	Lifting	Double-acting
Yellow Not required in combination with track marker.		Tramline marker	Lowering	Double-acting
Blue		Top link	Shortening	Double-acting
Blue		Top link	Lengthening	Double-acting
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 oil return flow to the intended coupling before all of the other hydraulic connections.

If the implement has a leakage oil line:

couple the leakage oil line in the intended coupling.

Install the supplied coupling sleeve on the pressureless hydraulic oil return.

Depressurise the hydraulic system between the tractor and the implement using the tractor control unit.
Clean the hydraulic plugs.

NOTE

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

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

The hydraulic plugs lock perceptibly.

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

Depending on the implement equipment, couple the pressureless return flow 1 of the front hopper onto the soil tillage implement.