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:

Loosening and tightening threaded connections of drive shaft
Special tools and workshop equipment required Socket, 24 mm -T10361A- Angle wrench -V.A.G 1756 A- ...

Checking inertia reel (locking mechanism)
The inertia reel has two locking functions. The first locking function is triggered by the belt being jerked out of the reel (belt extension acceleration). Test 1 – Pull belt o ...

Identification of Denso heater and air conditioning unit
Note Pay attention to correct assignment when replacing components. The combination of different makes of component is not permitted → Electronic Parts Catalogue. – Remove left centre console trim ...