[twobjshelbys]

I concur about loosening with the wheel on the ground else the axle absorbs some of the energy from the hammer. Also strike each wing all the way around every time until it loosens -- 1-2-3 1-2-3... Eventually it will. I applied some WD40 around the wheel-spinner interface although I don't know how much that helped. My wheels had not been anti-seized so were stubborn.

When putting it back use anti-seize and tighten 1-2-3 until you hear a tone change.