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:

Underseal
First read and observe the introductory information and safety warnings The underside of the vehicle is coated to protect it from corrosion and damage. The protective coating on the underside of the vehicle could be damaged when driving. Volkswagen therefore recommends that the protective ...

Adhesive sealant
Designation: Adhesive sealer -D 511 500 A2-, grey Adhesive sealer -D 511 510 A2-, black Issued 04.2009 Product description Adhesive sealant -D 511 500 ...

Removing and installing brake caliper
Special tools and workshop equipment required Vehicle diagnosis, testing and information system -VAS 5051- Tool set for brake bleeding -VAS 6564- Insert tool with ratchet -VAS 6784- Bit attachment (7 mm) -T10503- ...