Steve, I have really never had a problem taking the bolt loose, but yes it's just a bolt that should un screw. Put your wrench on it and tap on the wrench. That will act as an impact tool and it should come loose. If you need to use heat, keep it minimal. There is a rubber like seal on the back head. I have new seals if you need them. John Hervey www.specialtauto.com -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of Steve Sent: Tuesday, August 29, 2006 10:05 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: [DML] AC Compressor Mystery Group. I am trying to flush the AC system and convert to R134A. R12 has been removed and the plan is to use one of the procedures posted on the dmcnews tech section to convert. To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/