Date:         Wed, 25 Jul 2001 10:20:12 -0500
Reply-To:     Larry Alofs <lalofs@ENTERACT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Larry Alofs <lalofs@ENTERACT.COM>
Subject:      Re: AC Conversion: R12 to R134A
Comments: To: Michael Townsend <townsend@RTP.ERICSSON.SE>
Content-Type: text/plain; charset=us-ascii

Michael Townsend wrote:

> I'm about to do the same, but I need some more clarification:
>
> 1:  Where is the expansion valve, and where do I purchase one?  I didn't
> see it on our friendly internet vendors' sites.
> 2:  I can see one of the ports on the line near the compressor.  Where is
> the other one?

I believe that Ken sells expansion valves.  It is on the end of the evaporator
( the part that cools the air).  I decided that it was too much trouble to
drop it down so I didn't change the expansion valve.

The high pressure port is behind the vertical trim panel on the left side.
(late model non-Westy)  I don't know if the Westys have things arranged
differently.

Don't assume that the adapters from a "kit" will be correct.  There are two
different thread sizes for the original R-12 fittings: nominally 1/4 " and
3/16 ".  Of course the quick connect 134A part is different for the high and
low sides.  Various permutations are possible.  You may have to study them and
shop around.

Also, in my 91 GL there was very little clearance between the original R-12
high side fitting and the trim panel.  I had to use the cheap, short, aluminum
type of adapter that has no valve core of its own.

Larry A.