The steering seemed a bit on the sloppy side,at 107k replaced wheel bearings, center arm and dampener. Allignment on all four wheels and new Pirellies. When the engine is off the steering wheel can be rotated by a light touch appx throw 2 inches, once the engine is started, the system is pressurized and no play.
Here is where I'm going, when driving I get a drift, depending on the road left or right. I'm thinking a worn steering gear or ... also checked shaft bolts in both locations.Fluid level spot on also.
Would appreciate your thoughts.

 

If you’ve eliminated everything else it’s the steering gear

Thats a fun swap, trust me on that one

 

As you stated 4 wheel alignment? Do you have the kits for the front and rear alignment? If not, not sure how they aligned your car then.

 

It is a normal characteristic of Mercedes built automobiles to pull with the crown of the road. The solution is to increase camber by one degree on the right side. Typically 9.6 to 10.6 degrees. Mercedes allows up to 2 degrees more caster to correct pulling.
It's just the opposite on right hand drive cars. Rear toe also plays into this. Hope that info is helpful.

There should be an adjustment screw on the top of the steering box above the Pitman shaft. It is adjusted be turning down to fully compress the spring and then backed off approximately 3-4mm measured at the circumference of the adjusting screw. This adjusts the worm gear bearings and must be adjusted with the wheel in the straight ahead position.

 

Thanks for the heads up on the adjustment, I need to get a service manual . Still , the steering feels heavy , then again, I have been driving my Fiat 500 Abarth,soooo.... thanks again