OK, looking through Chilton's basically all I have to do is disconnect the power, slack the drive belt, and remove the compressor after the system is discharged and then reverse.  I've never released the belt on my 3500, any probs to look out for?  The book says to stay on top of the tensioner as you release so it doesn't rarrange any pieces, is it an armbreaker?  The process sounds straight forward, I've just got to find a place to discharge the system for me since I really don't want to violate Fedlaw by venting nasty gasses.