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.

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250

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

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)

Valvoline high-mileage Power Steering Fluid.

Last week.

Bought Filter at dealer.

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

__________________
80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250