steering column rebuild

I am in the process of trying to refurbish my steering column but have an issue getting the shaft out. Unfortunately I do not have a manual but i have watched a couple of videos. My question is does the pin on the lower end of the shaft come out if so how. I tried putting a socket over one side and putting in a vise to press it out but it did not seem to budge and I did not want to mushroom it. Also does the pinwheel shaped part on the upper end come off also and are there any complete rebuild kits available. Any advice would be greatly appreciated.