It requires a puller, or you can make one from a piece of 1/4" steel flat stock
Drill 2 holes in the flat stock to march up with the 2 holes in the wheel, Use a couple longer fine thread bolts through the plate into the wheel, Put a larger hex head cap screw and nut between the plate and top of the steering shaft. Take up the slack with between the steering shaft and plate with the cap screw & nut, and tighten the 2 long bolts into the wheel to pull the wheel off.