How to replace bearings

Must disassemble the pump from the motor. The impeller has RH threads so hold motor armature (do not damage it) and turn impeller CCW to remove it from end of shaft. Hold armature in left hand and rotate impeller with right hand, turning hand on impeller back toward your body, or top of impeller toward you. Don't know how else to describe it. Once you have the impeller off everything should come apart pretty easily.
If impeller is really stuck, you will need to figure out how to hold it evenly all the way around without putting pressure on blades. Strap wrench, home made jig, something that can put more pressure on it than your hand.
You may want to remove the motor field so that you can grasp the armature while removing the impeller, do this by removing the long screws from the end of the motor.

Gently pry, tap, slide, however you can, get the bearings off the armature shaft without damaging any parts attached to it like fans, or starter centrifugal weights. Those things can be removed if needed.


Put new bearings on by sliding over shaft and seating in place by driving against the center race only. Do not drive bearing on by striking the outer race to move the inner race, this will damage the bearing.