I usually just use my R-12 gauge set with the high side adapter for
R-134a.  When you get a R-134a conversion kit it comes with two high
side conversion fittings.  One of them will fit on the later model
Vanagon high side fitting.  Just screw the conversion fitting on, do
your work and then screw it off and keep it for another time.

I am curious exactly why you are doing A/C work during the winter in
Canada?

Ken Wilford
John 3:16
www.vanagain.com

Frank Condelli wrote:

>Does anyone know where the VW Vanagon tool VAG 1637  can be obtained ?  It's
>the A/C high pressure valve adapter to allow use of  the A/C gauge set.  See
>page 87.15 in the Bentley.
>
>Cheers,
>
>Frank  Condelli
>Almonte, Ontario, Canada
>_BusFusion_ (http://members.aol.com/BusFusion/bfhome.htm)  a VW Camper
>camping event, Almonte, ON, June 09 ~ 12, 2005
>'87 Westy, '90 Carat &  Lionel Trains
>Member: _Vanagon List_ (http://www.vanagon.com/) , _LiMBO_
>(http://www.bcn.net/~limbo/) , _IWCCC_ (http://www.westfalia.qc.ca/)  & _CCVWC_
>(http://www.ccvwc.ca/)
>Vanagon/Vanagon Westfalia Service in  the Ottawa Valley
>_STEBRO/Vanagon Stainless Steel  Mufflers_
>(http://members.aol.com/Fkc43/stebro.htm)
>_Frank Condelli &  Associates_ (http://members.aol.com/Fkc43/busindex.html)
>or  http://frankcondelli.com
>
>
>