Fredrich Mauthe Schwenningen German Wall Clock

 In for repair is a FMS (Fredrich Mauthe Schwenningen) German wall clock.  This is a time & strike "Free Swinger" which means the pendulum is outside the case and not contained in wood and glass.

The stamp on the backside of the movement and with a little research found the maker.  For more information about the "Guy" click this link for a brief history.  For more information about the company, this link .

 

The movement was removed from the case.  

The next two pictures show the condition of the back & front.

Back

Front

It is easy to see the old dirty oil.  Movement wear cannot be observed until the mainsprings are relaxed.  Once the springs are relaxed, it is easy to see which pivot holes are worn and need rebuilding.  A video of the pivot wear can be seen by clicking the image below. (apologize for the blurry image).

The video shows 5 worn pivot holes that were worn out.  There were 4 holes on the front side that also needed a rebuild.  A total of 9 pivot holes were rebuilt.  

The clock movement was then disassembled.  Check out this image showing the escapement pallet.  Notice the gunk on the pallet arms.

The next image shows the condition of the mainspring barrels.  What you see here is the mainspring caps removed exposing the spring.  Very dirty and gummy.  The mainspring was removed, steel wool used to remove and hard grease and stretched to rejuvenate the springs.

The wheel pivots were examined and polished.

The next image below shows the results of a rebuild.  Click the image below to see the smooth functioning of the wheel in the new rebuilt pivot holes.

After all repair work is completed. The entire movement was ultrasonically cleaned including the mainsprings and barrels.  This image below shows the movement after cleaning.  

 

Compare the plates above with the original condition of the plate below.

One more picture of the repaired and cleaned movement with all levers and wheels in place before the back plate is installed.

After repair, movement is run for a couple days. Tests are performed. Adjustments can be made while the clock is out of the case. Click the image to display the clock movement in action.

At this point, the case is oiled and cleaned.  There were a couple dings on the case that were easily corrected.  These two images below depict the before and after images of the case.

Before

After

  

The completed Clock.  A job well done!  Click the image below to hear the 5 o'clock strike.  Disregard the chiming clocks in the video.  When I tested the clock there were 3 grandfather clocks going off at the 1/2 hour.  I had to move the hands on this clock to the hour to demonstrate the hour strike.