I 'sneak up under' the window glass rubber seal..
and clean the rust away, then treat the rust spot with rust-converter ..
then paint.
if there's a hole...I use metal epoxy to fill it.

if it's bigger than that ..
I hire a windshield guy to come and remove the window.
Or..
if you are sure you're installing a new seal, just use a good razor knife to
cut the old seal away ..
until the glass wants to fall out.

and going back together ..
non-professionals do that sometimes for sure ..
for me it's worth it to pay someone who does that sort of thing all the time
to do it.

Scott
www.turbovans.com
----- Original Message -----
From: "John Rodgers" <inua@CHARTER.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, November 07, 2010 5:01 AM
Subject: Requesting - Tips & Tricks for Rear Side Window R&R

>  On my '88 GL I have a rust bubble that has appeared under the rubber
> seal on the right rear side window. It's a must that it be repaired
> ASAP. I don't want this thing to grow. It's big enough.
>
> Anyone have any ideas as to how to remove that side window. I've never
> done this before and surely don't want to break the glass. A new seal
> will be used when it goes back together.
>
> Also - tips & tricks to repair metal around that window would be
> appreciated, too. The rust bubble is on the bottom side of the glass.
>
> Thanks,
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com