Follow the steps that 67dart273 posted. Once you get past fig.7, the upper bowl should come off with a little lube and hammer. Run the nut back onto the shaft until it's flush with the end. While you lift up on the bowl, tap lightly on the end of the shaft. Once it comes loose, follow the rest of the steps up to fig.12. You won't need a special tool for the lock plate shown in fig.9. You can just use a drift or punch to get the pin out after you've removed the sleeve covering it. If you have trouble finding a lock cylinder, let me know and I'll check to see what I have.
