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:

Start/stop system
Fig. 147 In the centre console: button for the start/stop system First read and observe the introductory information and safety warnings The start/stop system automatically switches the engine off when the vehicle is stationary. When required, the engine restarts automatically. The func ...

Cleaning battery clamp and battery terminal
Special tools and workshop equipment required VAG 1331 Note The use of penetrating fluid, contact spray or grease etc. is prohibited since the missing adhesion ...

Product characteristics
Refrigerants used in car air conditioning systems belong to the new generation of refrigerants, the chlorine-free, partially-fluoridated hydrocarbons (H-CFC, R134a). In regard to their physical behaviour, they are refrigerants which can ...