DO NOT PRESS ON THE STUD!!! All you will do is screw the threads up even if you put a nut on it, but most important you will do damage to the ball and socket and make the ball joint useless. What I have done in the past was to first put the ball joint in hot water to expand the metal ring on the boot. There's about .005 thousandths press on the ring and the heat from the water will make the ring expand enough to get off easy and not do damage to the boot. I have used a craftsman adjustable prybar to get them off in the past as you can adjust the angle that your're prying against. I still think sears carry them but you going to have to find a sears or but it online. Next I made a fixture to press the joint out. A piece of heavy wall tubing or a piece of round stock long enough to not hit or press on the stud. The outer diameter need to be less than the arm housing by about .010 thousandths. Block up the arm in a press. I have used aluminum blocks or if thats not available Ive also used 4 x 4 wood from a used skid as that wood is strong enough to take pressing pressure. A LITTLE HEAT ON THE A ARM IS OK BUT DO NOT GET IT RED HOT AS YOU WILL DISTORT THE ARM!!! When you go to install the joint you will need another piece of bar to stock bigger than the bore flange of the a arm to press the ball joint in. Make sure you start the joint square with the bore and put some oil on both the bore and the joint where they are being pressed together. The oil will make pressing easier.
Hope this helps.
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