The article is for a w124 or w126 I think. Mine is an 81 240D with a manual transmission (W123). The rebuild procedure was nearly the same. There was an extra valve in the article, that was not on mine.
Mine was operating fine, with no apparent leaks or slop. I had the rebuild kit, and needed to take off the gearbox to properly torque the oil filter housing screws. I also had out the steering column and rebuilt the PS pump. I know I would want to rebuild it later. So, since everthing was off, I rebuilt it now. I haven't driven it yet. I need to adjust the gearbox. Also, install the interior, time the injector pump and afew other things.
Tom