Junghans Wall Clock


I found a neat wall clock from Goodwill for a great price, only $25! It still had the pendulum and winding key, so a total bonus there. I had wanted a pendulum clock for a while and decided to seize the opportunity while I was in there.

As received from Goodwill:

Removing the mechanism from the case.

Disassembling the movement. To let down the springs I using the winding key and unwound it turn by turn.

Cleaning the movement. I scrubbed the pieces with a solution made of:
    Three (3) Cups Ammonia (Clear – No Lemon Scent) One (1) Cup Murphy’s Oil Soap One (1) Cup Pine Sol Cleaner (Classic; Do not get off brand or enhanced version)

After re-assembling it I lubed it with Mobil One syntethic 5W-30.

Testing the movement after cleaning. At first the clock would only tick for a minutes and then stop. After listening to it sound "ticktock ticktock" instead of a steady "tick tock tick tock" I learned it had to be put in beat.

I also had to replace the screws that held the wall hanger to the case. The orignal screws had worn the wood and loosened. Rather than try to repair the wood, I just used a larger diameter screw.

Up on the wall and keeping time!

I did start a time log to regulate the rate, by setting the clock to the exact same time (down to the second) as a known accurate clock. Then the clock to be regulated is compared against the reference clock daily. If the clock is running slow by a few minutes, the pendulum bob is raised by turning the adjustment nut and vice versa if it's running fast. This is repeated daily until it is regulated.

First written 24 May 2022.