Hi Zombie,
the nut holding the fanwheel on will screw off. My method to get that undone would be to weld a nut onto the face of the disc and hit it with the rattle gun. Leaving the nut welded on till I re-assembled the motor and then grind the nut off Once you have the nut/plate off you then pull the fanwheel off using the 3 threaded holes in the top of the fanwheel
