two ways to repair that without moving the head.
( good sleuthing and photography btw )

one,  is the expandable push rod tube.
you remove rocker arm and pushrod, and rip out the bad push rod tube,
then you compress the spring-loaded expandable push rod tube ...fit that
in...
and you've got a new push rod tube there. They can leak a tiny bit at the
sliding junction..
but for repair use they're fine.

the other one is epoxy steel.....JB Weld , etc.
clean the spot real well, like with carb cleaner..
apply the goop , let cure.
that can work well.

Scott
www.turbovans.com
----- Original Message -----
From: "John Meeks" <vanagon@GMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Friday, June 25, 2010 4:12 PM
Subject: Pesky Oil Leak

> I'm no BP but I've been leaving 6" poodles if oil wherever I park.
> I have tracked it's source to a tiny hole in the case side of a push rod
> tube right
> on the outside of one of those accordion  ridges.
> http://picasaweb.google.com/vanagon/SaltbeltRustyParts#5486847990506798578
>
> <http://picasaweb.google.com/vanagon/SaltbeltRustyParts#5486847990506798578>I
> don't want to pull the head to replace the tube so... Does anyone have any
> idea what
> I could use to repair this ~3/32" hole
>
> John Meeks
> '91 Multivan
> Northern Michigan
>
> Vanagon Rescue Squad
> www.vanagonauts.com