we used to use a chisel tap it against the edge lightly until the nut loosens a little keep pressure on wheel so it doesn't bind nut and spin it rest of way off with fingers. tighten same way spin wheel until it feels like theres no play but that the bearings aren't binding. make sure to bend your lock tabs back in place. Not pretty but it works. with driving the seal in we used block of wood between hammer and seal again not pretty but works if you don't have proper seal driver.