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:

Test and measurement work that can be performed using a pressure gauge
Displays on the pressure gauge 1 -  Temperature scale for refrigerant R134a CF3–CH2F or CH2F–CF3. 2 -  Pressure scale In addition to the pressure scale, the pressure gau ...

Moving push button to installation position in the handle
Special tools and workshop equipment required     Release tool -T10534- If the push-button was pressed by mistake, the installation position can be restored. ...

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 closes again when the pressure has dropped (approx. 30 bar). Not all the ...

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