Re: Herschede Hall Clock - basic info needed
The 3 keywinds are referred to the different "Trains". There is the Time Train. That is the Middle keywind hole. The Westminister Train, is on the right hand side. The "Bong", or hourly chime is the left key hole.
You will want to wind them up roughly ever week (7-8 days). If the clock stops before the 7 days, wind them up every 6 days.
The easiest way to fix the "Bong" part, is to take off the hands, and place the hour hand with the number of "Bongs" (Don't rotate the hour hand). In your case, you would want to put the hour hand on the 7, and keep the minute hand the same. Easiest way is to move the minute hand (ONLY) to the top of the hour, waiting at every quarter until it stops chiming (Very Important).
The hands are held by a nut one can remove with tweezers (Hold the minute hand while loosening the nut). The minute hand might take a little coaxing to get off. The hour hand is a little stiffer, but should come off. Then, maneuver the hour hand to the proper hour (By the "Bongs"), and press it on. Then, replace the minute hand back at the 12. Place nut back on and you are good to go.
You can find the Serial Number on the movement itself. You have to open up the clock to get to the movement.
Hope this helps.
When all else fails, don't give up. Try and try again. 400-day clocks keep trying me, but I keep at it.. Persistence will Prevail!!