Volkswagen Golf Service & Repair Manual: Important repair notes on air conditioning
| Air conditioning systems designed for refrigerant R12 must
not be charged with refrigerant R134a until specific conversion
measures have been performed
→ Chapter. |
| The refrigerant oils specifically developed for R134a
refrigerant circuits must never be mixed with the refrigerant
oils specifically developed for R12 refrigerant circuits. |
| Air conditioner service stations which come in contact with
the refrigerant must be used only for the intended refrigerant. |
| Components for R134a refrigerant circuits are identified
with a legend or a green label, or are so designed (e.g. with
different threads), that they cannot be confused with components
for R12 refrigerant circuits. |
| Within the engine compartment, on the bonnet catch striker
plate or in the plenum chamber there is an information plate
which states what refrigerant is used. |
| Different refrigerants must never be mixed together. |
 Note
| When working on the refrigerant circuit please refer to the
information listed under “Safety precautions”
→ Chapter and “Basic procedures for working on
refrigerant circuits”
→ Chapter. |
|
Chlorofluorocarbon (CFC) is no longer used as a refrigerant
in the automotive sector.
R12Converting refrigerant circuits from refrigerant R12 to
...
Other materials:
Distribution of the refrigerant circuit components and their influence on
the high-pressure and low-pressure sides
On the high-pressure side, there are the condenser, the
receiver and the restrictor or expansion valve that acts as the
separation between the high-pressure fluid and low-pressure
fluid sides.
High pressure is created because the restric ...
1-pack wash primer
Designation:
1-pack wash primer -LLS MAX 106 M2-, light grey
1-pack wash primer -LLS MAX 107 M2-, dark grey
Issued 03.2013
Product description
1-pack w ...
Repair instructions
Contact corrosion
Contact corrosion can occur if unsuitable fastening elements
(screws, bolts, nuts, washers) are used.
For this reason, only connecting elements with a special
surface coating have been fitted.
In addit ...
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Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant