(ET) How do I change motor bearings?

["David Roden (Akron, Ohio)" <roden ald net>]

Stupid question ... no, make that ~ignorant~ question (as the song says, 
ignorance can be cured, but stupidity is forever).

My mower motor bearings are ~rough~.  After Matthew Magda's sad post 
about his broken motor magnet, I decided not to tempt fate any longer.  

Hmm, how do I change the bearings in my mower motors?  Getting to the 
rear (top) bearing seems easy -- take off the end cap, remove the nuts 
and brush carrier, and there it is.  (Does it just lift out?  I haven't 
tried yet.)

But the front (bottom) bearing is not so obvious.  Do I have to pull the 
blade mount off the shaft?   What kind of puller do I need?  How do I 
replace the blade mount when I'm finished?  Once the blade mount is 
pulled, does the armature just pull out of the housing? 

I want to do this right, and not destroy an expensive motor in the 
process.  Please help, and thanks for the coaching!