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:

Safety precautions for working on vehicles with start-stop system
Risk of injury due to unexpected engine start In vehicles with activated Start/Stop system, the engine may start up unexpectedly. The status of the Start/Stop system is indicated by a message in the dash panel insert. –  Deactivate Start/Stop syste ...

Switching over headlights for driving abroad (travel mode)
First read and observe the introductory information and safety warnings If you have to drive a right-hand drive vehicle in a left-hand drive country, or vice versa, the asymmetric dipped beam headlights may dazzle oncoming traffic with xenon headlights. Therefore, the headlights must be sw ...

Checklist
To ensure your own safety and the safety of your passengers, observe the following actions in the specified order : Find a firm and level surface suitable for lifting the vehicle. Switch off the engine. Select a gear if the vehicle has a manual gearbox, or move the selector lever ...

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