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:
Vehicle data sticker
Explanation regarding “PR numbers” on vehicle data sticker
Various types of running gear are installed depending on
engine and equipment level. These are identified by the PR
numbers.
The PR numbers are critical in d ...
Fitting single wire seals
Note
Single wire seals prevent the ingress of moisture and dirt
in the contact housing. They are installed, for example, in the
engine compartment and must always be reinstalled following
repairs.
As standard, ...
Removing and installing Valeo heat exchanger, LHD vehicles
Special tools and workshop equipment
required
Drip tray for workshop hoist -VAS 6208-
Hose clamps up to 25 mm -3094-
...
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Expansion valve
Pipes and hoses in refrigerant circuit