I think I have read all the discussion on removing and replacing the lower ball joint on an E320. It should be easy according to the comments but I have to report a failuire here. I was trying to remove the ball joint from the passenger side ( planned to do the other side later). I have removed both of the nuts from the Lower ball joint but failed to budge the horozontal bolt even slightly. The vertical bolt seems to be moving freely and loose. I have soaked the joint with lubricating oil and have used a medium sized hammer to hit the bolt end on ( damaged the threads) without any success. I then hit the knuckle behind the bolt from the side for over an hour without making any difference. I got several joint pullers, but did not find any that fit well enough to help. I got a joint spreader fork that was about a foot long and tried to position the fork behind the knuckle and hit it upwards but this made no difference either. I think the pitch of this fork is not that good and its too long to be used when the car is just jacked up from the floor as it cannot be hits from teh end very well. I do not need to save the ball joints but I need to get them out and replaced with new ones. Are there other parts ( nuts ) that must be removed before the ball joints can be taken out ? Should I get the Mercedes ball joint puller ? If so where do I get it from please ? Is it available at Autohausaz ? I have not read about needing to remove anything other than the two nuts at the ball joint to complete this repair, but it looks like something else needs to be removed to provide the mechanical clearance ?