Flexible pipes and hoses (Freelander 1)

General information

When removing and installing flexible pipes and hoses, follow the instructions listed below. This is a guarantee of reliable and long-lasting operation.

• Before removing brake or power steering hoses, thoroughly clean the hose connections and surrounding area.
• Before disconnecting the hoses, obtain suitable plugs or caps. After disconnecting the hose, immediately plug the openings in the housing or fitting to prevent dirt from entering the system.
• Clean the removed hoses from the outside and blow them out with compressed air from the inside. Carefully inspect the removed hose. Pay attention to the presence of cracks, cord delamination, and the reliability of the sealing of the tips. All hoses that are damaged cannot be reinstalled.
• When installing the hose, avoid sharp bends. After tightening the fastening nuts, the hose should not be twisted.
• After removing the hose, seal the connecting nipple with a cap; and close the hydraulic unit itself.
• When working with hydraulic system components, absolute cleanliness must be maintained at all times.
• After any work on hydraulic systems, check for leaks. To do this, one person should be under the car and carefully inspect the connection points, and the other, while driving the car, should press the brake pedal as hard as possible or turn the steering wheel with the engine running.

Do not disconnect any air conditioner lines unless you are qualified and trained to do so. The refrigerant used in the air conditioner can cause blindness if it comes into contact with your eyes.

Engine fuel system hoses

All fuel hoses are designed with two layers: an outer layer of reinforced rubber and an inner layer of special rubber. When removing any fuel hose, carefully inspect its inner layer. The inner layer should not have any delaminations from the outer casing made of cord rubber. If delamination is detected, the hose should be replaced with a new one.

Engine cooling system hoses

It is ESSENTIAL to follow the instructions below to avoid damage to the cooling system hoses and the fittings connected to them.

Relative position of the hose and the branch pipe

To avoid damage or fatigue failure of the hose, the hose must be connected to the connecting pipe correctly.

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If the hose and branch pipe have pairing marks (2), they should only be connected in this position.

During installation, the hose should be completely placed on the connecting pipe. Usually, there is a special shaped boss (3) on the pipe, allowing the connection to be assembled correctly.

Clamps

Usually the hose has marks (4) on it that indicate the correct position of the clamp. If there are no marks, the clamp should be positioned directly behind the flange at the end of the connecting pipe, as shown in the figure.

The flange of the clamp (5) with the worm must be directed towards the near end of the hose.

Otherwise, the hose may become pinched between the clamp and the flange of the branch pipe.

Worm drive clamps should be tightened to 3 Nm unless otherwise specified.

After tightening the clamp, make sure that the clamp does not touch adjacent parts.



The "Oetiker" type clamps are disassembled after unbending the tongue (shown by the arrow in the figure) and releasing the outer branch of the clamp. Clamps of this type are not subject to further use. When installing a new clamp, ensure the correct position of the clamp on the hose, when tightening the clamp, align the tongue with the longitudinal slot on the outer branch of the clamp (shown by the arrow in the figure).

Protection against overheating of parts

All required heat and protective screens must be installed and in good condition. If damage to these elements is visible, they must be replaced.

Pay attention to the installation of hoses adjacent to very hot engine parts, such as the exhaust manifold and exhaust gas recirculation (EGR) lines.

When heated, the hoses will deform. This must be taken into account when laying and securing the hoses.