I've removed the case cover from the motor. Removed the impeller bolt but the impller won't come off the shaft. I've tried to tap the shaft through with a dead blow hammer but no luck. I haven't tried hitting it super hard for fear of damaging something. Am I doing this correctly? I need to remove the impeller to replace a leaky water pump seal.

 

use a couple of screwdrivers and pry the impeller off and the bearings for the water pump are just pressed in on the back side of the case nothing too awful wd-40 will help out alot. ~Josh