The one I used was similar to the Toledo or Force. Hydraulic puller kit from Trade Tools or similar. The best part is those bearing separator jaws. They really hold well on to the blade boss. eBay had some similar very cheap kits but they are not hydraulic. Those blade bosses should not be all that hard to get off if you can get a good grip behind the boss.
It's easy with the hydraulics bit may not be without them. I noticed one of the Trade Tools ones was 16 tonne.
Jeff
