That sounds like a later steering box than on an AD truck. There's no rag joint or "top nut" on AD boxes. The worm bearing adjustment is at the bottom end (opposite the steering wheel), and the sector adjustment is opposite the sector shaft. I suppose the concept would work but it sounds like they're adjusting the sector first and then the bearing preload. That's opposite of the way that the manual says to do it (worm shaft bearings first THEN sector engagement.) There should be zero end play on the sector shaft, so their end play comment is not correct for AD steering boxes.
