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:

Component protection
First read and observe the introductory information and safety warnings Some electronic components and control units are fitted with component protection as standard, e.g the radio or navigation system. Component protection was developed as a protective mechanism in order to: Prevent any ...

Removing and installing tyre pressure sensor, Beru tyre pressure monitoring system
View of Beru system   WARNING After tyre sealant has been used, the tyre pressure sensor of the respective wheel must be renewed.   ...

Round connector systems
  Note If necessary, any housing catches in place (secondary locking mechanisms) must be released or removed prior to disengaging the contacts using the prescribed tool → Chapter.     ...

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