At 11:48 AM 1/28/2009, John Rodgers wrote:
>removed the plug and nut, soaked it in some Marvels Mystery Oil, but all
>the pulling and tugging has been to no avail. Anyone have any
>suggestions on how get the arm off the shaft without bending or breaking
>something?

John, I'd try threading the nut back on partway to give a bearing
surface, then use a battery-clamp puller or some other small puller.

If it doesn't come right off, keep some tension on it and tap the
side repeatedly with a small (8-oz or so) hammer.  With some patience
that technique can have remarkable results, with the hammer sized to the work.

If push came to shove, I'd rotate the arm so that it shears the
internal splines off, then clean out the grooves in the shaft and
re-seat the arm.  That's a deliberate weak point so you won't burn
out the motor or break something internal if the wipers are stuck or forced.

--
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'84 Westy "Dutiful Passage," '85 GL "Poor Relation"