OK here is a pilot bearing removal trick I have heard about but have never
tried.
You take some cheap wheel bearing grease and pack it into the hole so that the
grease comes even with the bottom lip of the bearing.  Now stuff some crumpled
up newspaper in the hole so that it completely fills the hole.  Now get a
piece of a wooden broom handle that will just fit inside of the hole (you want
to make it as tight a fit as possible so that grease won't leak out between
the handle and the bearing when you do the next step).
Next you get a hammer and pound the wooden handle down into the hole.  The
hydraulic action should pop the bearing right out.
Becareful!  The bearing could possible pop out and harm you so wear eye
protection and hand protection.
I have never tried this but my friend has done it several times to remove
bearings and says it works great.
Big disclaimer on this one says that if you do this and hurt yourself it is
not my fault (kiddies don't try this at home).
If anyone does try it please let me know how it turns out for you.
Thanks
Ken Wilford
Van-Again
John 3:16