Why would you use the old o-rings ? You can get adaptor kits at Pep Boys quite cheap and the new ones are bluish-green and work with all the oils you may encounter these days whereas the old black ones wont. I would suggest that you pull the vacuum down for at least 45 mins. Longer if you can wait. If you are using a conventional gauge set , then you can open both high and low side to the center hose, assuming thats where you have the pump attached. Both sides will show a vacuum reading and I would like to see at least 28. What kind of pump are you using? Sounds like a medical pump. It maybe worth your while to borrow an automotive a/c pump which probably wont give any volume values. Once a good vacuum is pulled, I doubt if the volume means much. I borrow a friends'. I dont know what brand it is, he just calls it Monica, lol I have worked on 3 systems this spring, including converting my recently sold '84 Westy to R134a. If you want to chat on the phone about it, I would be happy to. p-mail me for the number. good luck, Steve Cotsford Columbia SC |
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