Steering Column Bearings ?
 

I read a thread that suggested replacing the steering column bearings.
Never done this on any car I have ever owned.
Don't think it was a prank like a muffler bearing kind of thing.

My steering column is squeeky, and a little tighter than I would like.
I relieved some stress at the steering box adjustment and this helped.
Lubed the tie rod ends and other joints I could get a grease needle into.
Checked the power steering pump output pressure (1150 PSI, 79Bar).
Changed power steering fluid and filter.

So I thought I would go after and lube the steering shaft.
This is the 83 300SD. No airbag.

I could practice on the donor 300D. But thought I would ask first if doing this makes sense.

What kind of power steering fluid are you using? When was the system flushed and the filter changed?

I remember my old 300SD did have a bit of effort.

Haasman

Valvoline high-mileage Power Steering Fluid.

Last week.

Bought Filter at dealer.

Checked pressure before and after fluid flush (no change in pressure).