Hi Matthew,
For around $25 you can get a collapsible pushrod tube and new seals for
either end. You must remove the engine tin that covers the tubes, and
drain off a little oil. Take off the valve covers and remove the rocker
assembly.  Remove the pushrod from the culprit tube. Use a pair of
pliers to carefully bend away to old tube.  Installation of the new
tubes is straight forward. You may want to lube the seal inside the tube
to make it easier to collapse for insertion..

Matthew Pollard wrote:

>i have a leak on my 1.9L 84 wbx powered vanagon.
>it is a slight leak that goes away when the engine is warm, but persists
>otherwise. It appears to be coming from the seals where the push-rod tubes
>mate with the block. How can i stop these leaks? do i need to replace
>these seals or can i smear some goop on them? If i have to replace these
>seals, can i do it with the engine in the bus and the head in place?
>thanks
>matthew
>
>
>Matthew Pollard          "Racing with the wind and flirting with death
>Dept. Of Chemistry        So have a cup of coffee and catch your breath"
>University of Idaho
>www.uidaho.edu/~poll7356
>
>
>