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 remote release operating mechanism for seat backrest
  Note Removal and installation are described for the left vehicle side. Follow same instructions for the right side as appropriate. Removing –  Pull and hold operating mechanism to remotely release seat backrest -1-. – ...

Using a mobile telephone in the vehicle without a connection to the external aerial
First read and observe the introductory information and safety warnings Both during telephone calls and in standby mode, mobile telephones transmit and receive radio waves, which may also be termed "high-frequency energy". Current scientific literature warns us that radio waves can ...

Checking radial and lateral runout on wheels and tyres with tyre gauge
Checking lateral run-out –  Preload tyre gauge approx. 2 mm.     –  Fit tyre gauge to side wall of tyre. –  Turn wheel slowly. ...

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