I don't have a direct answser for you, but as a field repair, I've used
2-part expoxy (the kind you get from a local hardware store) to fill the
cracked seam as best as possible until I could get a replacement tank. It
worked just okay when applied from the outside for a day or two, then I
drained the tank and applied it on the interior and it worked for the rest
of the week until I had a new one to replace it with.
Hope this helps.
-Gregg

On Tue, Aug 2, 2011 at 9:26 AM, j kulina <redbluephish@hotmail.com> wrote:

> On the way to camp with the family and broke the alternator belt which, I
> believe flew up and cracked the coolant expansion tank on "BlueJean", our 90
> MV. Got a new belt on and she runs but leaks coolant from the tank. Can't
> find a tank anywhere up here. Anybody know of where one might be?  Looking
> for the pressurized tank, not the filler tank.
> Thanks,
> John Kulina
> 1990 Vanagon MV
>
> Sent from my iPhone
>