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:
Engine oil consumption
First read and observe the introductory information
and safety warnings Engine oil consumption can vary from engine to engine
and can change during the working life of an engine.
Depending on how you drive and the conditions in which the car is used, oil consumption
can be up to 1.0 litre/ ...
Special connector systems
Note
If necessary, any housing catches in place (secondary
locking mechanisms) must be released or removed prior to
disengaging the contacts using the prescribed tool
→ Chapter.
...
Aligning exhaust system free of tension
Procedure
The exhaust system must be aligned when cold.
Note
The -arrow- points forwards.
–
Loosen bolt connections for front clamp
...
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Retrofitting refrigerant circuit from R12 refrigerant to R134a refrigerant