I have a 1990 740 GL that is ready to be retrofitted to r-134. I've read the FAQ's on it and searched the old posts.
I have read the procedures as extensive as they are, but with the new retrofit kits using PAG oil, is it completely necessary to replace the receiver/ drier and drain the compressor.
I'm also familiar with the problems of old retrofits that did produce bad chemical reactions.
I've done and heard of these switch overs being done successfully by evacuating the system and simply recharging the system.
Is there something unique to the ac system in this volvo that requires so much more to be done?
Thanks,
-Brent
guysaab@msn.com
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