VW Golf manuals

Volkswagen Golf Service & Repair Manual: 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 and its associated refrigerant oils. This is assured by using genuine replacement parts.
→ Parts catalogue
O-ring:
Never reuse seals!
Check that diameters -a- and -b- are correct.
Before fitting a seal, coat it lightly with refrigerant oil.
  Note
The colour coding of O-rings for R134a refrigerant circuits has been discontinued. Coloured and black O-rings are used.
→ Rep. gr.87
→ Parts catalogue
 

O-ring

Expansion valve
The expansion valve atomises incoming refrigerant and regulates the flow so that, depending on the heat transport, the vapour does not become a gas until it reaches t ...

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 genui ...

Other materials:

Changing a blown fuse
Fig. 232 Blown fuse: A: flat blade fuse, B: JCASE® fuse Fig. 233 Remove or insert fuse with plastic pliers: A. flat blade fuse, B. JCASE® fuse First read and observe the introductory information and safety warningsPreparation Switch off the ignition, the lights and all electrical co ...

Safety precautions when working on high-voltage system
Danger to life due to high voltage The high-voltage system is under high voltage. There is a risk of severe or fatal injury due to electric shock. –  Persons with life-preserving or other electronic medical devices in or on their body must not perf ...

Searching for leaks in refrigerant circuits using leak detector -V.A.G 1796
  Note Small leaks can be detected with, for example, an electronic leak detector. –  Evacuate refrigerant circuit using an air conditioner service station → Chapter.   Note ...

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