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:

Stowing items of luggage
First read and observe the introductory information and safety warnings Always stow all items of luggage in the vehicle securely. Distribute items in the vehicle, on the roof and on the trailer as evenly as possible. Place heavy objects as far forward in the luggage compartment as p ...

Removing and installing rear lid seal
In the factory a sealant is applied to the rear lid seal, the seal is fitted to the body flange and then rolled on. Note When the seal is removed, the sealant on the inside of the seal will be spread and the flanks will be bent out slightly. If the seal is then refitted, sealing and fir ...

Purging electrical air conditioner compressor
Vehicles with high-voltage system Observe the additional warning instructions for working on vehicles with high-voltage system → Electrical system; Rep. gr.93. WARNING ...