I have had problems with the power steering in my S-type and decided to to have a look. It seems that the rocker shaft pushes upwards and scratches the rocker shaft cover. Could this be due to a weak spring or is there something else I should have a look at. It baffles me how this can happen. On the bench it seemed fine.
Update: I againq took apart the steering box but could not find anything wrong with my rebuilt. Also checked the steering pump, no clues there either. Disconnected the pump and steering is stiffer but at leadt not binding so i at least can drive it. I swopped out the control valve with a spare one but it made no difference.