Soak it, Soak it, and Soak it some more, with PB blaster. I had a wheel on a 782 that wouldn't come off. I worked on that wheel for 2 weeks soaked it 3 times a day pulled on it, beat on it, yelled at it, swore at it, just about everything you could do for 2 weeks. I spent about 3 hours on it one night and had myself at wits end, gave up and said I'll cut it off in the morning I'm done with it. I went down the next morning got out the saw set everything up, and thought I'm gonna yank on this thing one more time. Standing beside the tractor I grabbed the wheel and pulled as hard as I could. That wheel came off so easy I almost went a** over tin cup. Landed on the work bench, and thought ot myself what just happened
. It came off so easy I couldn't believe it. The PB finally got there
. Mike and I did one on an old 70 a couple months ago that we thought was gonna be a pain, it had been outside for who knows how long. I grab it and it popped right off with out even trying
. You just ever know!!!