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:

Removing and installing window channel
Removing and installing window channel Note The removal and installation sequence is only for the left window channel. Removal and installation of the right window channel are similar. ...

Undercoated areas, body overview indicating differing coat thicknesses
Note Undercoating (stone-chipping protection) applied during repair work must be identical in appearance and thickness to the original undercoating. Water drainage holes must remain clear. All threaded studs and welded nuts with metric ...

Schematic diagram - coolant hoses, Golf GTE
Note Currently, only the auxiliary heater function is available. At the moment the auxiliary heater is not intended to be operated as a supplementary heater. In vehicles with a high-voltage system, the high-voltage heater (PTC) -Z115- is ...