I think I'm developing an obsession with threaded rods. This one is for pulling the bearing off the axle shaft (and pressing it back on again later, without damaging the bearing).
After successfully pulling the axle with the threaded rod trick above, and then pulling the inner seal with the other threaded rod trick above, I tried to remove the bearing using Joe Alexander's trick of stabbing a piece of wood on the floor with the inner end of the axle shaft to dislodge the bearing. It didn't work. My bearing is really really tight on the shaft. Of course the bearing is fine (I did the bearing test on the vice) but it has to be removed to get the backing plate off the shaft and the outer seal out of the drum brake backing plate. It was leaking like a sieve. I didn't want to put force on the bearing outer race for fear of damaging this expensive bearing so I designed and built a puller to remove the bearing by pulling on the inner race only.
I used 3/16" by 3/4" strip and a couple of 5/16" threaded rods that I bought at Canadian Tire. At the top of the puller, I ground a threaded pointer to center on the shaft so things wouldn't slip or move around. The point is not really visible in the photos. After using it, I would recommend using thicker steel strip for the two straight pieces of steel. Although it worked, mine took a slight permanent bend after using it because my bearing was really tight. 1/4" x 3/4" would probably be perfect.
If anyone wants to make one of these pullers and has a problem, don't hesitate to contact me. It worked like a charm and cost only a few dollars. There is only one relatively critical dimension, and it only has to be reasonably close.
It is large enough for the threaded rods to clear the outer diameter of the brake drum backing plate so it can be flipped around and used between the opposite side of the bearing and the axle hub to press the bearing onto the shaft as well as pull it off of the shaft. When I'm putting the system back together, I'll take a couple of photos of that process as well and post it here in a few days.
Tom Kizer