Sean:

It's been a long time since I've screwed around with the exact same problem
on my '81 so I'm a little hazy on the details, but if you completely remove
the window regulator from the door you'll see that the slider (the roughly
triangular piece that attaches to the horizontal steel channel on the glass
with a pair of bolts) is attached to the vertical track with a rectangular
white plastic piece that can't be seen with the regulator in the door.  It's
most likely this plastic piece is worn, causing the slider to come loose.
There's no provision for replacing this piece since it's held in place with
some sort of press-fit device.

I managed to come up with some sort of fix, though it took several tries,
and I can't even remember what I did.  Best "fix" is a new window regulator.
---------------------------------------------------------------
Tom Young                       '81 Vanagon
Lafayette, CA 94549         '82 Westfalia
---------------------------------------------------------------
----- Original Message -----
From: "Sean Garrett" <SEAN.GARRETT@ASU.EDU>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, April 20, 2004 11:56 AM
Subject: 1981 dropped window in door

OK, thank you everyone for those tips I got on my previous post. I got the
panel off just fine. The window has the horizontal steel channel still
attached to it. However it does not connect to the slider that moves up the
vertical track. Seems to have broken off. I can lift it up and put it on but
then falls off again. Appears to be missing some type of bolt or cap to hold
it on the vertical track.

I looked at ETKA and it was not a very good diagram. It did not show a bolt
or attachment device (cap) of some sort here. So I don't have to pull off
the panel on my good door can anyone help out ???