RE: Adjusting neck nut on springers.
Let me first make a disclaimer. Although I have restored cars, planes and motorcycles, I am not an expert on these front end, but I do have some opinions. This is the second springer and the one thing I have never been able to get an answer to is the adjustment of the front end. The manual tells you to measure the fall-away point. After jacking and leveling the bike, you must disconnect the cables to the controls and the throttle. The mark the center position of the front wheel then move the wheel to one side slowly. The point at which it falls away, is the fall-away point. Repeat in the other direction. Then the manual tells you to tighten or loosen the reck nut until both sides fall away between 1.5" and 2" (I think). The problem is that with the caliper, on the left side on mine, the fall-away to the left happens way before than it does to the right. An anal retentive solution might be to adjust it until the fall-away is a total of 3"-4". That would be off center, but I think it would be close. It would need some more math to get the correct adjustment.
I don't know why, but these front end neck bearings seem to wear more than the standard front end. What happens is the wear causes the races to wear in a football-shape with the points of the ball pointing fore and aft. THis is what causes the "memory", especially after a readjustment, because we normally adjust in a straight position and the steering wants to "cam" back to the center when you turn it. One way I can tell if the neck bearing is bad is that after adjustment, a rut in the road transfers the motion, usually absorbed by the front end, to the whole bike.
I have about 10,000 miles on the bike and don't anticipate a problem yet. However, since the adjustment is critical to maximizing the life of the bearing, I want to get it right. It sounds like you have several miles left.
One more thing. The later bikes have the zerk fitting for greasing in the neck. I grease every 2,000. If you don't have this fitting, I suggest you install one next time you work on the neck bearings.
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