6. Once the hubs are clean and dry it's time to remove the old bearing races. This is done with a brass punch. Each race is pressed into the hub for a tight fit. If the race falls right out, you have a problem and may need to replace your hub. Once you have removed the old races, look for cracks, pits, or rust-again, replace if need be. Then clean the hubs some more and get all the old grease and grit out.