Steven, I use the AC chart from any other VW Bentley from the 80s or
early 90s.  They all have them except for the Vanagon.  On the low side
you want to see between 35-40 psi wen fully charged.  The high side goes
up to around 250 psi, maybe higher when fully charged but I usually just
pay attention to the low side unless the system is fully charged and
still not working properly.  Also the low side metal pipe coming out of
the compressor will start to get cold and stay cold when the system is
about full.  I have been servicing these systems for many years and if
you follow these guidelines you should be able to charge a normal
system.  If you have any other questions please feel free to pmail me.

Ken Wilford
John 3:16
www.vanagain.com

Steven Johnson wrote:
> Hi folks,
>
> I'm using a manifold gauge set on my '91 Campers AC system and cannot find
> anything in the Bentley that shows what pressure to expect (high or low
> side)
> at given ambient temps.   Is there such a fact sheet or spec.?
>
> Thanks,
>
> Steven
>
>

--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: 856-327-4936
Fax: 856-327-2242