The hour hand usually drops at about the 2 or 3 o’clock position. It’s usually o.k. until I try to wind the clock. Then the little vibrations, or whatever, will cause the hand to drop, sometimes all the way down to the 6! If anyone has any knowledge of this sort of thing, I certainly would appreciate some pointers.
Usually the hands are either held by a threaded knob in the center, or more likely just by friction. In the second case, remove the hands by gently pulling them towards the front. You will notice each has a different diameter sleeve which fits over a shaft for that hand (concentric shafts). Squeeze the sleeve gently with fingers or a pair of pliers so that it grips the shaft a little more tightly. Then replace the hands.