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:

Mounting tyre, run-flat tyres, ultra-high performance tyres
Only trained personnel may perform any assembly work on run-flat tyres and ultra-high-performance tyres. If fitted, check tyre pressure sensor using vehicle diagnostic tester, and renew it as necessary. – ...

Removing and installing dust and pollen filter, LHD vehicles
Special tools and workshop equipment required Commercially available vacuum cleaner Cover plate -T10532- Removal wedge -3409- ...

Run-flat tyre system PAX, support ring
Dimensions Overview of important dimensions: Codes/designations Example: 90-500(35) CLI A 1 876107 90 - Nominal width in millimetr ...