Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (May 2000, week 4)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Tue, 23 May 2000 22:25:03 -0500
Reply-To:     Marshall Ruskin <mruskin@PANGEA.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Marshall Ruskin <mruskin@PANGEA.CA>
Subject:      Re: 90 Carat: A/C Dying Diagnosis Confirm Please
Comments: To: "Mark B. Magee" <condor2@FLASH.NET>
Content-Type: text/plain; charset="iso-8859-1"

Missing a couple of key steps:

Before putting in the new refridgerant, he should do a 45 min pressure test with nitrogen, and then pull a hard vaccuum for 5 min. Should maintain HV without leaks, as well as the pressure test.

Also, never heard of using a solvent inside the system, but that's just an expression of ignorance - maybe there's some safe solvent out there.

If those tests turn out OK - then fill it. Otherwise, you'll just be throwing you R-134a into the atmosphere, and be right back where you started. Really.

Marshall Ruskin 84 Westy

>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 >


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.