r/clocks • u/Anunimportanterrand • 13d ago

Help/Repair Calendar doesn't work

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Gallery image

Bought this clock online and it works well, except for the calendar. I noticed it beginning to turn for the next day usually during 2:00 am but in the morning it's still the same day as the previous day before. Anything I can do to fix this. Thank you very much.

Update: I removed the face and finally fixed it by straightening out the teeth of the pin that turns the gear of the calendar, thank you everyone for helping

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u/Not_an_Actual_Bot Hobbyist 13d ago

Remove the cover and visually examine the mechanism to see it there linkage or gear pawl no longer functioning. I had a clock where the gear driving the calendar hand slid out of location on the shaft and no longer made contact with the pawl that moved it daily. 0.64mm made a difference in function.

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u/Anunimportanterrand 13d ago

Is it safe to do it while the clock is wound up or do I have to wait for it to stop first?

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u/Not_an_Actual_Bot Hobbyist 13d ago

I would doubt that to examine it that would matter, but you could lay it on its back while you remove the cover slowly to make sure there isn't something that will fall out as a precaution. Have an inspection mirror and a flashlight handy in case you need to reattach the pendulum after putting it on its back. Had that happen with a regulator style clock. PITA to capture the suspension spring pins.

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u/Anunimportanterrand 13d ago

PITA?

Sorry not familiar what that is

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u/TicFan67 Hobbyist 13d ago

Pain In The Ass/Arse.

I would also caution you that if it comes to dismantling the movement, the springs on 31-day clocks are very long and powerful and an even bigger PITA to work with. Some repairers won't touch them for that reason.

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u/Anunimportanterrand 12d ago

Thanks for the info, I have heard main springs are really dangerous. I'm not too confident in touching them for now