PRELIMINARY & INTRODUCTORY INFORMATION: Because the rear tire wear condition has such a MAJOR effect on handling, I recommend the steering be cleaned, lubricated, and adjusted, only at tire change time, after a new rear tire is installed, and perhaps 100 miles or so is on it. Be extremely cautious about using BMW parts books sketches; same for Haynes and Clymers manuals. Various parts may be shown on any particular sketch or drawing that are only used on some models or some years, and, in some instances, are no longer used at all. The order of assembly, or placement, may not be as on the sketches.   You may want to read/review the following article by Brook Reams, it is lengthy, but has many photos in it that I do not supply in my article; and Brook has a somewhat different approach here and there. Review his article, you may want to do that more than once ....and maybe once more after reading my article. http://brook.reams.me/bmw-motorcyle-rebuilds/1973-bmw-r755-rebuild-project/31-bmw-r755-install-and-align-front-forks/