To get the ball joints loose you take two hammers and place one on the side of the spindle where the ball joint sticks throught it then carefully whack the opposite side with the other hammer. You will need to loosen the nut on the ball joint but not remove it so it will catch when it comes loose. You will know when you are hitting the correct spot because it will make the hammer you are holding against it pop off. You may have to hit it a few times and maybe gently tap the nut that is loosened to get it to go.
Tim
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