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:
Charge factor
There must be space both for liquid and vapour in a
container. As the temperature rises, the liquid expands. The
space occupied by the vapour becomes smaller. Eventually, there
will only be liquid in the container. After that time, even a
small increase ...
Checking valve guides
Special tools and workshop equipment
required
Universal dial gauge bracket -VW 387-
Dial gauge -VAS 6079-
...
Assembly overview - fuel tank, vehicles with multi-link rear suspension
1 -
Fuel line
Vehicles with auxiliary heater
To metering pump -V54-
Do not kink
To pull off, press release button on connection.
Plug-in connectors must engage »audibly«
when joined. ...
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Expansion valve
Pipes and hoses in refrigerant circuit