1983 Mercedes Benz 300sd

Engine Mechanical problem
1983 Mercedes Benz 300sd V8 Two Wheel Drive Automatic 234000 miles

I am attempting to replace the belts but the alternator wont swivel. I loosened the tension bar and the two retainer bolts but it seems to be hitting or sticking on something. Do I need to fully remove the lower bolt?
September 29, 2010.

You do not, you are forgetting about the bolt on the back.

Dr Loot
Oct 5, 2010.