Skip to main content
Gerry | Vanagon
Checking account...
← vanagon.com home · Continue the discussion in the forum
VanagonEuroVan
Subject:Re: AC Conversion: R12 to R134A
From:Larry Alofs
Date:Wed, 25 Jul 2001 10:20:12 -0500

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.

Have something to add on this topic today? Revive this thread in the forum »