It is simple enough if your careful. Holding the track-rod so it can not turn, unscrew the locking nut Mark the threads where the rod end comes to with tippex Split the ball-joint off Holding the tracking rod so it can't turn, unscrew the rod end Holding the tracking rod so it can't turn, screw the new rod-end on to where the threads are marked Holding the tracking rod so it can't turn, nip up the locking nut Finish re-assembly Repeat for other side Have car tracking checked and adjusted