Coupling the hydraulic hose lines

All hydraulic hoses are equipped with handles. The handles have colour labels with a code number or a code letter. The labels are assigned to the respective hydraulic functions of the pressure line of a tractor control unit. Stickers are applied on the implement for the labels, 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	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


Designation	Function			Tractor control unit
Blue		Sections and support wheels of the hoeing machine	unfolding/lowering folding/lifting	Double-acting
Green		Parallelograms of the hoeing machine	Lower Lift	Double-acting
Red	Drive for the front tank pump			Single-acting
Red	Pressure-free return flow for the front tank pump
Red	Permanent oil circulation			Single-acting
Red	Pressure line			Single-acting
Red	Pressure-free return flow
Red	Load sensing control line
Beige		Manual control unit	Pressure line Tank line	Double-acting
Beige		Manual control unit	Moving the sliding frame manually in a straight line to the right Moving the sliding frame manually in a straight line to the left	Double-acting

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

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.

NOTE

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

First couple the line for the pressureless return red T with the corresponding hydraulic socket on the tractor.
If the implement has a load sensing control line:
Then couple the load sensing control line red LS with the corresponding hydraulic socket on the tractor.
Then couple the pressure line red P with the corresponding hydraulic socket on the tractor.

Couple the remaining hydraulic hose lines 1 to the hydraulic sockets on 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.