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Date:         Tue, 6 May 2008 13:56:55 -0700
Reply-To:     Robert Fisher <garciasghostvw@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Robert Fisher <garciasghostvw@GMAIL.COM>
Subject:      Re: How to convert to 134?
In-Reply-To:  <4d1b79350805061316y5b30985bs16a160692dd86bf@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

A VW technical bulletin on the 134a retrofit:

http://www.gti16v.com/tb879503.htm

Be aware that in some editions of the Bentley the labels for the high and low side are reversed; if you try to charge into the high side you could get some undesired excitement.

Cya, Robert

On 5/6/08, Jim Felder <jim.felder@gmail.com> wrote: > > At one time someone posted a link that described the connection and use of > a > manifold gauge. Could anyone point me to that? > Thanks, > > Jim > > > On Tue, May 6, 2008 at 2:02 PM, Mike Collum <collum@verizon.net> wrote: > > > Well, FWIW, I converted my '85 Westy to R134-A in Sept. of '02. > > > > What I did was, I replaced the receiver/dryer, removed the compressor > > and drained the old oil out and flushed it, flushed the system, replaced > > only the O-rings that were disturbed, put Ester oil in the compressor > > and put it back on, drew a vacuum in the system and let it sit for about > > 3 hours then added oil and refrigerant. I didn't replace the expansion > > valve. > > > > I've had to add a little refrigerant each spring but the charge > > certainly doesn't leak right out. My guess is that the old mineral oil > > coated the old style hoses over the years which made them less prone to > > leakage with the R134-A. > > > > Mike > > >


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