The inner race slides on the shaft to apply the preload. It is a very tight fit and over time can get worse.

It was a while ago that I did mine and cant remember every step. I seem to recall you take all the lock pins and keys out off the pullies and then slide them to one end to give you space to get at the bearing. The outter race can be moved back as well so you can get the puller on the inner race. Might be worth protecting the end.

If it wont move then try a little heat to break the bond or leave in an oil bath for a day or two.

I got your pm but not had chance to go to the workshop yet.

As for bog's I don't know, haven't been on here for a while myself. He sure would be the best one to help you tho.