Well, youre gonna need a bearing puller. I know sometimes theyll come with lawnmowers, or in lawn mower tool kits. Kirby sells them, theyre $18. I think its definitely worth it, to replace the bearings in all your Kirbys for $18.
Heck, a vacuum shop would cost you more than that just in labor costs to replace the bearings in ONE vacuum.
Oh, and for post-D80 models, youll need a special fan locking tool, which Kirby also sells.
For any models D80 and before, you can use an ordinary ice pick for a fan locking tool.
I beleive a007kirbyman (Bill) can sell you both of these tools.
VW