Volkswagen Golf Service & Repair Manual: Pipes and hoses in refrigerant circuit

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General information on refrigerant circuit / Refrigerant circuit components / Pipes and hoses in refrigerant circuit

The mixture of refrigerant oil and refrigerant R134a attacks certain metals (e.g. copper) and alloys and dissolves certain hose materials. Therefore, always use genuine replacement parts.

The hoses and pipes are held together with screwed joints or special push-fit joints.

Note

When assembling screwed joints, be careful to comply with the prescribed torques, and when working on push-fit joints, be careful to use the disconnection tools provided.

O-ring

These O-rings seal the joints between the individual components of the refrigerant circuit. Use only seals that are resistant to refrigerant R134a an ...

High-pressure safety valve

The high-pressure safety valve is fitted to the air conditioner compressor or the receiver. The valve opens at a pressure above approx. 38 bar and ...

Other materials:

Running-in
First read and observe the introductory information and safety warnings Please follow the regulations concerning running-in new parts. Running in a new engine Any new engine has to be run in during the first 1,500 kilometres. During its first few hours of running, the internal friction in ...

Tyre sizes for vehicles with four-wheel drive
The following points must be observed for vehicles with four-wheel drive: Only tyres of the same make, design and tread pattern may be fitted to the front and rear axles. Different tyre rolling circumferences ...

Eliminating flat spots caused by storage or handling
Eliminating flat spots caused by storage or handling Flat spots caused by storage or handling cannot be eliminated from the tyre using workshop equipment. Flat spots caused by storage or handling can be removed onl ...