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Date:         Tue, 23 May 2000 20:14:24 -0500
Reply-To:     "Mark B. Magee" <condor2@FLASH.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Mark B. Magee" <condor2@FLASH.NET>
Subject:      90 Carat: A/C Dying Diagnosis Confirm Please
Content-Type: text/plain; charset=us-ascii

Volks, Thanks to Joel and others with my Sanden compressor question. My problem is A/C is not blowing COLD. Took it to my neighbor who is truck mech and auto A/C mech for big-rigs, just for a 134a top off for the rig was converted when I bought the Vanagon. He says following: 1) When he touched schrader valves high-side grey-ish brown-ish material came out with the small amount of gas. He immediately suspected problems. 2) He put on the gauges and it being about 89F outside gauges corresponded to proper amount of gas in the system. 3) He next checked head pressure and could only get 150 bs maximum out of high side w/unit running wide open, at this point about 90F outside. His Diagnosis: A) Unit was converted in 1998 as indicated by mandated sticker not due to Eco-friendly owner, but rather compressor failure. Compressor looks -very- new. B) When job done, lines not properly blown out w/nitrogen/brake cleaner and all metal from old dying compressor pistons remained in the lines in solution w/old oil. C) New compressor now losing compression due to digest of metal filings left in lines His Recommendations: 1) New: compressor, reciever/dryer, expansion valve and O-rings. 2) Properly blow lines out with some solvent similar to brake cleaner to remove all contaminants. 3) Remove old/install new parts mentioned above, oil compressor, vac down and refill.

This all sound right on to me, he is a friend and offers all labor for next to nothing ($100 USDs). Anyone see anything wrong with this diagnosis or had similar circumstances to have me look at something else? Any and all feedback appreciated Regards Mark Magee Kemah TX USA 90 Carat John 14:6


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