In for repair is a Holland wall clock. The clock fell off the wall. This is a 3 weight chiming clock. The case survived the fall but the mechanism and moon dial gear sustained some damage.
Upon a closer look, the moon dial gearing was inoperable. Two pieces were missing. The minute shaft was badly bent causing the moon wheel (directly connected to the canon pinon) could not reach the 2 moon gears. The escape wheel verge was dislodged from the plate causing the angry running of the time train as demonstrated in the video below.
As can be seen in the video above, there was nothing holding the escape wheel from running away triggering the chime sequence to activate. I suspected significant damage to the escape wheel and pallet arbor. Fortunately, the pallet arbor became detached from the plates with no visible damage. The minute arbor needed straightening. The image below is how the pallet arbor appeared with a closer look:
Here is an image of the straightened minute arbor
The next two images demonstrate the moon dial gearing and why it does not operate
This first image shows the two moon gears as they attach to the back of the face. The arrow shows the gear needing repair and the relation between the two.
This 2nd image shows the missing pin (arrow). This pin rotates on the gear and every 12 hours, moves the moon dial gear that can be seen on the face one tooth every 12 hours. There are 60 teeth in the moon dial gear. This gear rotates 360 degrees every 29 1/2 days.
This 3rd image is the same wheel with the pin attached:
Click the image below to demonstrate a short video of the moon dial gearing in action. The click for the two wheels was missing (or broken off). This was rebuilt. The pin on the wheel that turns the moon gear was also missing (see above). This was also rebuilt. This video demonstrates that the rebuild is working perfectly.
The clock mechanism has been repaired and the moon dial gearing is rebuilt. The next issue is the face. Looking at the face and the pins on the clock movement, the face needed to be attached directly to the movement. This will keep the moon dial gears in line with the face. When the clock was delivered, the face was "glued" to the case. The pins holding the face to the mechanism were broken off from the face. This had to be repaired. Unusual that there are only 3 pins holding the face in place. Once these pins were reattached to the face the mechanism can be attached and tested with the moon. Unfortunately, the face damaged was so great that the moon dial gearing was not able to be meshed with the moon gear on the hour pipe, hence the moon dial is still not activiated.
The clock is up and running and ready to go back to it's owner.
A short video of the clock running and chiming:
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