There is a normal/acceptable steering wheel play in all the
1977-85 w123 diesel and w126 diesel up to 1986,if it is not
more then 1 inch(2cm) on both sides of the steering wheel,
I would not recommend any adjustments if the play in the steering wheel does not exceed that,take it from me,I might not
be familiar with the newer MB...I have owned 184 old models
(w123/w126 diesel),thats how I put myself thru college...buying
and selling 2-5/month,they all have the same problem,except
if the front end and steering box was recently replaced,you have
to adjust your driving style.