I concur with Loren -
I have also heard many times that the Boxer water pump is very
sensitive to belt over tightening - which will cause a
bearing failure [ one way to get coolant out the vent hole..]

I keep my belt just tight enough to keep it from squeaking.

Tom
90 Westy

-----Original Message-----
From: Loren A. Busch [mailto:lbusch@IX.NETCOM.COM]
Sent: Tuesday, May 13, 2003 1:59 AM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: water pump #4 in a year, vent hole leak

One thing that has not been mentioned is belt tension.  If the belt is
to tight the stress can take out a bearing or seal on a waterpump.
Don't ask me how I know....