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Date:         Fri, 22 Feb 2002 20:08:35 -0800
Reply-To:     Robert Dalton <dieselsong@YAHOO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Dalton <dieselsong@YAHOO.COM>
Subject:      Re: Air Conditioner Question
Comments: To: Jeff Strickrott <jstric01@CS.FIU.EDU>
In-Reply-To:  <3C76EEC5.7AA4554F@cs.fiu.edu>
Content-Type: text/plain; charset=us-ascii

Hi Jeff,

I think the problem with converting an older van is the lack of barrier hoses. I never could get a definitive answer from anyone who has tried it on an early 80s AC, but I've heard r134 leaks through the non barrier hoses in a matter of weeks. The other question is when did VW start using barrier hoses. It may have been as early as 91, which is why 90s vehicles can be more easily converted to r134.

Rob

--- Jeff Strickrott <jstric01@CS.FIU.EDU> wrote: > I am new to AC issues and have an old R12 system > that I am contemplating changing > over to R134. Is it mandatory to change the > receiver/dryer because of the new > coolant chemical configuration, or does it just make > the system more efficient. > What else would need to be changed? > > Any good web resources for converting an existing > system? I note that Stan Wilder > sent a link for Freeze 12 > (http://www.freeze-12.com/). Reading the > advertisement > it looks to be a better deal than R134. No idea how > expensive it is. > > > Regards, > --Jeff Strickrott > 82 Westfalia > > Larry Alofs wrote: > > > developtrust wrote: > > At $180 to service it I'd like > > > to fix any leaks to minimize a yearly drop of > almost $200. > > > > > > Any advice? It is 80 degrees in California today > with our dry Santa Ana > > > winds and also summer is coming. > > > > > > Has anyone solved this AC issue more permanently > than replacing freone every > > > year? > > > > > Last spring I converted my 91 to R134a. The PO > had said that the R12 > > had leaked out soon after he had it recharged. I > replaced the > > reciever-drier , emptied the old oil out of the > compressor, replaced it > > with ester oil. I put in new O-rings at those > connections. I suspect > > that the ones at the compressor were leaking; they > were quite flat and > > hard. I pumped the system down for a few hours > with a vacuum pump and > > then recharged it. I invested about $75 in a > service gauge set. > > I am quite happy with the performance so far, > but it has been less > > than a year. > > > > Larry A.

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