VW Golf manuals

Volkswagen Golf Service & Repair Manual: Trade names and designations

Refrigerant R134a is currently available under the following trade designations:
H-FKW 134a
SUVA 134a
KLEA 134a
  Note
Other trade designations may be used in other countries.
Among the large selection of various refrigerants, only this one may be used for vehicles. The designations Frigen or Freon are trade names. They apply also to refrigerants which must not be used in vehicles.
   

Colour

Like water, the refrigerant is colourless both in the vapour state and the liquid state. Gases are invisible. Only the boundary layer between gas and liquid is visible. (Fluid level in indicator tube of charging cylinder for bubbles in sight glass.) Liquid refrigerant R134a may appear coloured (milky) in a sight glass. This cloudiness is caused by partially dissolved refrigerant oil and does not indicate a fault.

Characteristics of refrigerant R134a
...

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 ...

Other materials:

Assembly overview - control unit and hydraulic unit, LHD vehicles
1 -  Brake line From primary piston circuit of brake master cylinder to hydraulic unit. Identification: Ш 6 mm and flare nut with thread M 12 x 1 14 Nm 2 -  Brake line Fr ...

Assembly overview - subframe, multi-link suspension, front-wheel drive, except for e-Golf
1 -  Subframe Removing and installing subframe with attachments → Chapter 2 -  Bolt Renew after removing 70 Nm +180° 3 -  Bolt Re ...

Without needing to purge refrigerant circuit of contaminants (cleaning), e.g. in cases of external damage after an accident
Drain refrigerant circuit. –  Remove air conditioner compressor.   Note If a different air conditioner compressor with other refrigerant oil is fitted, purge the refrigerant circuit with R134a r ...

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