VW Golf manuals

Volkswagen Golf Service & Repair Manual: 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 pistons
Special tools and workshop equipment required     Drift -VW 222 A- Piston ring clamp, commercially available Removing –  ...

Checking child seat anchors after an accident
Points to check Child seat anchors must be checked for damage and deformation after an accident.   Child seat anchors welded to the body or the seats/backrests or bolted in place may not be repaired or straightened. ...

Removing and installing brake pads, front brakes
Special tools and workshop equipment required     Torque wrench -V.A.G 1331-   Piston resetting appliance -T 10145- ...

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