Coupling the hydraulic hose lines

All hydraulic hose lines 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 machine 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 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
Red		Hydraulic oil feed line	Permanent hydraulic oil circulation
Red		Pressure-free hydraulic oil return	Oil tank

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 machine using the tractor control unit.

Install the coupling sleeve 1 on the pressure-free oil return on the tractor.

Clean the hydraulic connectors.

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 connectors lock perceptibly.

If the machine has an upper drawbar:
Route the hydraulic hose lines through the guide 1.
Route the hydraulic lines with sufficient freedom of movement and without chafing points.