Hermle Skeleton Clock

In for repair is a modern Hermle Skeleton Wall Clock with a Mechanical 8 Day Passing Bell Strike Movement.

A simple mechanism with some heavy issues.  Upon initial observation the clock was dry and dusty.  

After further inspection it was evident that the clock has gone thru a partial disassemble and a not so good reassemble process.  There were two very badly bent pivots and the strike mechanism arbor was dislodged from it pivot hole. The arrows above shows the pivots misplaced.

This image shows the 4th and escape wheel pivots. 
Very badly bent, not sure if they could be bent back true.

4th wheel

Escape wheel

The pivot on the 4th wheel was able to be repositioned straight and true.  The escape wheel pivot not so much.  This pivot cracked when carefully being straightened.  I did not have much hope for this one.

The pivot had to be replaced.

This picture shows the new fabricated pivot. This picture shows the wheel mounted on my Sherline lathe.  The damaged pivot was removed from the arbor.  The arbor end was prepared for the new pivot.  A centering bit was used to locate the center of the arbor.  Pivot wire the size of the original pivot was used to fabricate the new pivot.  A drill bit matching the size of the pivot wire was used to drive a hole in the end of the arbor.  The pivot wire was then cut to size and taped into the new hole.  The pivot was then cleaned up and polished.   This pivot is better than the original.

After all repairs have been made, the entire mechanism was cleaned including the black clock housing.  

Here is a picture of the top of the clock before cleaning.

  Notice the dust.  This was found throughout the clock mechanism.

After all the repair work has been done the clock mechanism was put in the ultrasonic cleaner it was put back together then tested.  Here is a short video of the mechanism running before being put back into the case.  After initial testing is completed, the mechanism is put back in the case, hands installed and tested again.  This short video shows the finished product.