240D AC Compressor Replacement

The AC compressor is leaking so it needs replacement I would like to switch to R134 at the same time. What other parts should be replaced during the gas
change?
Chris
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Certainly all the pipework. R134 has a much smaller molecule than freon, and will simply escape through the walls of your existing pipes. R143 installations also have different connectors on the fittings.
This site has lots of useful information:- http://www.airconditioningforcars.co.uk /
DD
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