Replacing a Mason-Sullivan Clock Movement
Replacing a Mason-Sullivan Clock Movement
Replacing a Mason-Sullivan Clock Movement only requires the most basic tools. A pair of needle nose pliers and both styles of screw drivers is usually all that you need for the swap out.
The new clock movement will be the same movement you have now but brand new. So everything will fit the same as it did. Having a Mason and Sullivan clock movement puts the movement 40 years old. The company went out of business this long ago so it is time to swap it out. Because the old one was able to work night and day for 40 years without too much complaint, the new one will do the same.
The disguise
The Mason and Sullivan company from MA USA built and sold countless clock movements and clock kits.
So many they were able to convince the makers of these units to have their name on a stamp right on the movements. Not long after that, they even had their own numbering system put in place instead of the makers numbering system.
The Availability
Although they are now out of business we can still replace the clock movement. The movements were not their own anyway and the movement producers are still in business for the most part.
in other words, the German manufacturers are making the same movements as they did 40 years ago. A new movement will last longer than even the very best overhaul by the best clock maker.
Also, the movement would be half the price of even a cleaning on the old unit and be brand new instead.
The Identification
The first step is to ignore any names on the clock movement and only pay attention to the numbers. Match the numbers on the ID page to see who made it. It may or may not have a M/S number on the back plate itself on the low right.
If it is a M/S numbering system an X will follow at the end of the number and go straight to the conversion chart. It will say something like 3325X or similar. This is if the clock movement has the Mason Sullivan number system only.
As in the previous explanation, the exclusive M/S numbers were only in the later years. Prior to this it would have the M/S name and the real makers numbering system. If do not have an X in the number it is most likely a Hermle movement so go to that web page to match it up.
Summery
The clock movement is most likely a Hermle movement in disguise. The new unit can ship the same business day if we receive the order early enough, comes with oil already.
It will have its chains or cables if it's a floor clock movement, comes with instructions and support to install the unit.
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I have a grandfather clock with a chain driven movement identified as L50T in a 1968 Mason & Sullivan Clock Movement catalog. What movement/identification would you recommend as a most-direct replacement?
Thank you for your consideration……..Warren
The ONLY information stamped on the back plate is as follows (from top to bottom order): An icon of a gear wheel inscribed with letters A over a K by a C, next info Original Kieninger, Made in Germany, No (0) jewels, german word unoblaufeh ( my??) and numbers 12/71.
That is the obsolete, Kieninger H series, we have a solution to a replacement at this link
https://www.clockworks.com/product/new-h-series-kieninger-clock-movement
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
What are the numbers off of the back plate of the clock movement itself? If it is hard to get to, usually you can stick a cell phone up behind the movement and get a picture of the numbers. Or through the side access panel if there is one.
James Stoudenmire
40yr Clockmaker
Author of Clockworks.com
Do you have bezel replacements . This movement is a 1972 year
Bezels =
https://www.clockworks.com/?post_type=product&s=Bezel
James Stoudenmire
30yr Clockmaker
Author of Clockworks.com