you can use a steering wheel puller, (maybe a harmonic balancer puller) or sometimes you can loosen the nut and hold a ball peen hammer on the end of the shaft, pull the wheel towards you with your knees (feet on dash or something) and hit the ball peen hammer with another small one. My dad gets them off like this all the time, I end up screwing something up and getting out the harmonic balancer puller.