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:
Starting conditions for auxiliary heater, supplementary heater mode
Terminal 15 (ignition) on
Engine speed > 600 rpm
Coolant temperature < 72 °C
Ambient temperature < 5 °C
Reserve fuel level not reached
...
Introduction
This chapter contains information on the following subjects:
→ Indicator lamps
→ Turn signal and main beam lever
→ Switching lights on and off
→ Lights and vision – functions
→ Main beam assist
→ Switching over headlights ...
Assembly overview - underbody covers, hybrid vehicles
1 -
Front cover
Left and right
2 -
Underbody cover
Left and right
Removing and installing
→ Chapter
3 -
Rear underbody cover
4 -
Bolt
For rear underbody co ...
© 2016-2026 Copyright www.vwgolf.org
Expansion valve
Pipes and hoses in refrigerant circuit