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. |
| 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. |
|
|
|
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 ...
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:
Checking exhaust ventilation for passenger compartment
Note
The stale air escapes via ventilation openings in the
luggage compartment trim.
If the ventilation is to function properly, the exhaust
openings must not be covered.
The ventilation ...
Routing and securing wiring
Mark lines prior to removal to prevent them from being
interchanged and to ensure that they are fitted in their
original positions. This applies for fuel, hydraulic and vacuum
lines as well as lines for activated charcoal filter system and
electrical wir ...
Removing and installing mounting bracket, RHD vehicles
Removing
–
Remove wiper arms
→ Electrical system; Rep. gr.92.
–
Remove plenum chamber cover
→ General body repairs, exterior; Rep. gr.50.
...
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Expansion valve
Pipes and hoses in refrigerant circuit