Volkswagen Golf Service & Repair Manual: Pipes and hoses in refrigerant circuit

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

The hoses and pipes are held together with screwed joints or special push-fit joints.

Note

When assembling screwed joints, be careful to comply with the prescribed torques, and when working on push-fit joints, be careful to use the disconnection tools provided.

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 an ...

High-pressure safety valve

The high-pressure safety valve is fitted to the air conditioner compressor or the receiver. The valve opens at a pressure above approx. 38 bar and ...

Other materials:

Pre-treatment of bonded surfaces when renewing laser-welded roofs
Using P180-grade sandpaper, dry-sand cathodic dip primer on bonding surface for roof → Item down to bare metal. – Using P180-grade sandpaper, dry-sand bonding surface for ...

Permissible deviation in tread depth
Only tyres of the same construction and tread pattern should be used on all four wheels. Always fit the tyres with the deeper tread to the front axle. It is basically possible to replace tyres individually. ...

Assembly overview - sill panel moulding
Note The illustration shows the sill panel moulding on the left side. The right-hand side is similar (mirror image of left-hand side). I: sill panel moulding, 4-door model II: sill panel moulding, 2-door model 1 - Sill ...