Hello guys!!! Is anyone still active on this thread?

I'm desperate. I changed 3 pumps, 2 steering gears, and still a very heavy steering still on the My 560sel.

I even installed the pump from the armored version red label 90bar. gave no effect.

I put a thick washer under the pressure reducing valve in the pump, and the effect appeared. the steering wheel became light, but !!! only at rpm above 2500 and the pump began to buzz. but the steering is light, like an old Rolls-Royce.

I thought it might be possible to install a smaller pump pulley, and leave the washer, adjust the thickness so that the pump does not buzz. or is it still fashionable to do something with the control valve in the steering gear ???


Thanks all for the answer!!!!