Volkswagen Golf Service & Repair Manual: O-ring

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General information on refrigerant circuit / Refrigerant circuit components / 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.

→ Parts catalogue

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:

Removing and installing exhaust system
Removing Danger of severe burns from hot exhaust system. Burns to hands and other body parts possible.Allow exhaust system to cool. – Switch off electrical consumers. – Switch off auxiliary and sup ...

Tools and materials commercially available
Fin comb Charging hoses 5/8"-18 UNF valve Note Use charging hoses in different colours, 1800 mm ...

Removing and installing fuse holder, battery
Removing – With ignition switched off, disconnect earth cable from battery → Chapter. – Open cover -1-. – ...