axle grease and a aluminum or steel rod and a mallet works every damn time when its done correctly, it might take several times to get enough grease packed in but it will work.
to remove a pilot bearing you pack grease thru the center hole until the grease is flush with the bearings upper surface and insert a dowel into the center hole thats a loose sliding fit but will slide into the bearings inner diam. a good hard whack, on the dowel will hydraulically force the bearing out as the grease expands under the bearing, as the dowel compresses the grease as the grease can,t be compressed, and the hydraulic pressure forces the bearing up and out of the crank.
crank pilot bushings are usually removed with grease, being packed into the recess inside and behind the bearing, and having the bearing hydraulically forced out by driving in a wood or aluminum dowel to compress the grease, the grease forced to move away from the dowel, forcing the bearing out http://www.autobarn.net/lis55500.html
THERE ARE TOOLS TO REMOVE PILOT BEARINGS BUT THE HYDRAULIC GREASE METHOD WORKS IF YOU DON,T HAVE ONE