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:

Assembly overview - lock carrier, NAR
1 - Lock carrier with add-on parts Removing and installing → Chapter Moving to and back from service position → Chapter 2 - Mounting plate Left and right 3 - Air guide ...

Removing and installing clutch engagement
Removing Dual clutch removed → Chapter. – Remove large engaging lever with small engagement bearing. Note The upper section of bushing cannot be removed or i ...

Switching off auxiliary and supplementary heater
If the button instant heat button has been pressed, or after the preset operating time has expired or the coolant has reached a temperature of 88° C, the combustion is ended and the run-on mode begins. The circulation pump -V55- and the combustion air ...