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 front vehicle level senders -G78-/-G289-
Special tools and workshop equipment required Torque wrench -V.A.G 1410- Removing – Disconnect co ...

Vapour pressure
In an enclosed container that is not completely full, refrigerant evaporates as vapour at the surface in a quantity sufficient to form an equilibrium between vapour and liquid. This equilibrium develops under pressure and is often called vapour pressure. ...

Assembly overview - speed sensor on rear axle, all-wheel drive
1 - ABS speed sensor Clean inside surface of hole before inserting sensor Coat inside surface with high-temperature paste -G 052 112 A3- Removing and installing → Chapter 2 - Bolt ...