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.
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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:

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General notes
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Golf R - from model year 2014, sales type 5G1
  Note The specified wheel and tyre combinations apply for all the gearboxes allocated to the respective engines. Deviations from this are specially indicated in the table. The Golf R will be listed according to the sales types and not by the ...

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