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:

Removing and installing refrigerant circuit pressure sender -G805
Special tools and workshop equipment required Torque wrench -V.A.G 1331- Commercially available twelve-point socket bit, extra long, 1/2", 24 mm (dimensions: 32x82 ...

Removing and installing fresh air/recirculated air, air flow flap control motor -V425-, RHD vehicles
Special tools and workshop equipment required Vehicle diagnostic tester Note The control motor has end stops with integrated limit switches instead of a potentiometer. First ca ...

ACC — Adaptive Cruise Control
Note On vehicles with ACC, the trim in the right-hand cover of the front bumper must not be painted during a repair paint job or replacement. The ACC system located behind can become operational due to the thickness ...