here  is a link for doing R-134a conversion too..

http://gti16v.org/tb879503.htm

Mike

At 10:42 AM 5/4/2003 -0700, TJ Hannink wrote:
>--- Richard Golen <rgolen@UMASSD.EDU> wrote:
> > I need to find one of those metal splice connectors
> > to repair the leak.
> > Anyone know the inside diameter of the A/C hose?
> > Also, anyone know where I
> > can get one of those metal splice connectors?
>
>If I remember correctly, the hoses running between the
>front and rear of the van are different I.D.'s. Any
>A/C shop should be able to get you the correct size
>splice, but I wouldn't recommend going that route. I
>had a splice in the hose that runs between the back of
>the compressor and the condensor and every summer, the
>hose clamps that secured it would loosen, I'd find a
>small puddle of orange refrigerant oil under the van
>and I would lose all my R-12 ($200.00 worth at the
>time).
>
>I would replace both of the A/C lines (they are at
>least 15 years old if they have never been replaced
>before) that run from front to back on the van. One
>runs between the condensor and the receiver/dryer,
>while the other runs between the condensor and the
>compressor, so there is no need to remove any interior
>panels or cabinets to access them. The easiest (and
>cheapest) way is to remove them, bring them to a
>hydraulic hose shop and have them rebuilt using your
>original ends if necessary. Then re-install with new
>green o-rings and a new receiver/dryer, flush and
>refill the system with R-134a. Next time you service
>the evaporator/expansion valve, replace those o-rings.
>
>Good luck,
>
>=====
>TJ Hannink
>Goldibox - 1987 Vanagon Camper, Wolfsburg Edition
>Winter Park, Florida
>http://home.earthlink.net/~tjhannink/
>http://groups.yahoo.com/group/wolfsburg_campers
>http://photos.yahoo.com/tjhannink [Vanagon] Album
>
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