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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