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
Red	Pressureless return flow. The pressureless return flow must always be coupled!			Maximum line pressure less than 72,52 psi (5bar)
		Fan for singling unit	switching on and switching off	with on-board hydraulic system, single-acting
	Return flow line			without on-board hydraulic system, double-acting
		Fan for Central Seed Supply and fertilizer	switching on and switching off	without on-board hydraulic system, double-acting
	Return flow line			without on-board hydraulic system, double-acting
	Leakage oil line. The leakage oil line must always be coupled!			Maximum line pressure less than 29,01 psi (2bar)
Green		Preselect on the control terminal: Folding the implement	Fold	Double-acting
		Preselect on the control terminal: Folding the implement	Unfold	Double-acting
		Preselect on the control terminal: Loading board	Unfold	Double-acting
		Preselect on the control terminal: Loading board	Fold	Double-acting
		Preselect on the control terminal: Telescopic axle	Extend	Double-acting
		Preselect on the control terminal: Telescopic axle	Retract	Double-acting
		Preselect on the control terminal: Wheel mark eradicator	Lowering	Double-acting
		Preselect on the control terminal: Wheel mark eradicator	Lifting	Double-acting
Blue		Jack	Extend	Single-acting

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.

Depressurize the hydraulic system between the tractor and the implement using the tractor control unit.
Clean the hydraulic plug connectors.
First, couple the red T hydraulic hose line with the corresponding hydraulic socket on the tractor.
Couple the red 1 hydraulic hose line with the corresponding hydraulic socket on the tractor.
Couple the hydraulic hose lines 1 to the hydraulic sockets of the tractor according to the marking 2.

The hydraulic plug connectors lock tangibly.

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