VW Golf manuals

Volkswagen Golf Service & Repair Manual: Effects on metal

In its pure state, refrigerant R134a is chemically stable and does not attack iron or aluminium.
However, impurities such as chlorine compounds in the refrigerant do attack certain metals and plastics. This can lead to blockages, leaks and deposits on the air conditioner compressor piston.
   
Critical temperature and critical pressure
Up to a gas pressure of 39.5 bar positive pressure (corresponding to a temperature of 101°C) the refrigerant R134a remains chemically stable; however, above this temperature the refrigerant decomposes (see Combustibility).
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 a ...

Water content
Only very small amounts of water are soluble in liquid refrigerant. On the other hand, refrigerant vapour and water vapour mix in any proportion. ...

Other materials:

Removing and installing C-pillar trim, saloon
  Note Removal and installation are described for the left vehicle side. Follow same instructions for the right side as appropriate. Special tools and workshop equipment required     ...

Removing and installing crash bar
Special tools and workshop equipment required         Torque wrench -V.A.G 1331 Removing –  Remove knee airbag with igniter ...

Wheel cover
Fig. 220 Removing the wheel covers First read and observe the introductory information and safety warningsRemoving the wheel covers Take the box spanner and wire hook from the vehicle toolkit. Insert the wire hook into one of the holes in the wheel cover. Push the box spanner thr ...

© 2016-2026 Copyright www.vwgolf.org