There's a linked DIY on this job @ Pelican Parts IIRC .

I just changed the input shaft's seal and Lo ! . no more weepy power steering ATF everywhere .

I used a sheet metal screw to push the old, rock hard seal out and a deep socket to gently knock the new one in .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better