I'm sure it's an interference fit, maybe only .0005" tight just to keep the inner race from spinning on the shaft. The rest of the shaft sticking out past the bearing, get some real fine emory cloth or scotch brite and clean up the shaft where the bearing is going to slide off, then use some Kroil Oil or even WD 40 and soak that area. If you going to tap on the end of the shaft, use a brass punch so you don't put a little mushroom flare on the end of the shaft. And like said, may need a little heat....quick and no heat on shaft if possible, doesn't take much to get that inner race to "grow". Use some scotch brite on the armature area where the brushes contact before assembly too.
|