Upper control arm, special tool for ball joint?
I'm about to replace the UCA on my C230 2003. I did it once 4 years ago and don't remember if I need a special tool to retain the ball joint while I screw it in place. Or maybe it was on the lower control arm? I remember that I had to use a 90-degree adaptor otherwise I could not fit an Allen (or Torx...) bit in there. Anyone knows what I'm trying to say?
thx



