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:
Removing and installing valve stem seals (cylinder head removed)
Special tools and workshop equipment
required
Removal and installation device for valve cotters -VAS
5161A- with guide plate -VAS 5161A/32-32-.
...
Removing tyres, wheels without and with tyre pressure monitoring
If fitted, check tyre pressure sensor using vehicle
diagnostic tester, and renew it as necessary.
Note
The tyre pressure sensor (if fitted) must not come into
contact with water or be blown upon with compressed air w ...
Introduction
This chapter contains information on the following subjects:
→ Opening or closing the windows electrically  
→ Electric windows – functions  
→ Roll-back function for the electric windows  
Additional information and warnings:
Volkswagen information system â ...
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