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:

Vacuum generation with manual vacuum pump -VAS 6213-
In certain cases, vacuum can be generated with the manual vacuum pump -VAS 6213- instead of with the engine or the vacuum pump. – To do this, connect manual vacuum pump -VAS 6213- to vacuum hose from connection -B- on brake ...

Condenser
The condenser transfers heat from the compressed refrigerant gas to the surrounding air. This allows the refrigerant gas to condense into liquid form. ...

Removing and installing cigarette lighter socket
Note The removal and installation procedure is the same for all sockets and is therefore described here only for the cigarette lighter socket. Caution If excessive force is exerted ...