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:

Trailer socket
The trailer socket must be connected in accordance with the manufacturer's instructions to the electrical system of the pulling vehicle. When installing, observe the relevant current flow diagrams and the installation instructions from t ...

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 ...

Overview of fitting locations - front control motors, air conditioning system with electric/manual controls, RHD vehicles
1 - Temperature flap control motor -V68- Checking: with vehicle diagnostic tester Removing and installing → Chapter. Renewing: initiate basic setting using vehicle diagnostic tester. 2 -&nb ...