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:

Introduction
This chapter contains information on the following subjects:  → Switching the auxiliary heater on or off    → Remote control    → Programming the auxiliary heater    → Operation   The auxiliary heater is supplied with fuel from the vehicle fuel tank and can ...

City emergency brake function
Fig. 175 The display in the instrument cluster: advance warning display First read and observe the introductory information and safety warnings The city emergency brake function is part of the area monitoring system (Front Assist) and is active when Front Assist is switched on. Dependin ...

General repair instructions
–  → Chapter „Safety precautions when working on high-voltage system“ Comply with notes. –  Read self-diagnosis of auxiliary heater using vehicle diagnostic tester. –  ...

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