They are quite easy to remove using a long punch / drift.
Some times it is difficult to get started because there is a tube between the two bearings and there is not a lot of space for the drift to hit the bearing.

I have uses a anchor bolt in the past. get one that is almost the same size as the inner diameter as the bearing. snug it up so it is a nice tight fit in the bearing now you can just hit it straight through. works great

you may have to shorten the bolt because you will smash the threat's and you wont get it out of the bearing anymore.

hope this will help

http://grommitsgarage.blogspot.nl/20...placement.html