Volkswagen Golf Service & Repair Manual: Converting R12 refrigerant circuits to R134a refrigerant circuits and
repairing them (retrofitting)
 Note
| The laws and regulations listed below are valid in the
Federal Republic of Germany. Other or additional laws and
regulations may apply in other countries. |
| Sources in other countries may be obtained from the
responsible authorities. |
| Due to the environmental situation and the consequent
legislation, refrigerant R12 is currently neither in production
nor available. Refrigerant R134a was developed as a replacement
for R12. |
| However, air conditioning systems developed and designed for
refrigerant R12 cannot simply be charged with refrigerant R134a.
To ensure trouble-free operation of the air conditioning system
following a retrofit, various components of the refrigerant
circuit must be replaced. |
| An exact description of the procedure for conversion and
instructions for repair of converted refrigerant circuits can be
found in the
→ Repair manual for air conditioning systems with refrigerant
R12 parts 2 and 3. This workshop manual is only
available as a hard copy. |
|
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Note
The laws and regulations listed below are valid in the
Federal Republic of Germany. Other or additional laws and
regulations may apply in ot ...
Note
The laws and regulations listed below are valid in the
Federal Republic of Germany. Other or additional laws and
regulations may apply in ot ...
Other materials:
Increase in temperature due to insufficient tyre pressure
The graph shows the temperature development of a tyre at a
speed of 180 km/h.
A -
When specified tyre pressure is maintained, the temperature
will remain stable.
B -
Danger zone: When tyre ...
Subsequent bleeding of hydraulic system
Note
Carry out subsequent bleeding when:
brake pedal travel is too long or so-called
»soft brake pedal«
Subsequent bleeding requires the assistance of a second
mechanic.
–&n ...
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 ...
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