I am in the process of rebuilding a fourtrax 250 rear differential. I have the differential almost torn down. I have removed the pinion bearing lock nut, but I am unable to remove the pinion gear and shaft. The old bearing seems to be holding the shaft from coming out. Any tips on how to accomplish this task? The shop manual says to use a shaft puller. Anyone ever made their own or have a link to one?

Thanks in advance,