If you have a grandfather clock with moon phase follow these instructions.
Grandfather clock moon dial mechanism.
Check the platform where the grandfather clock has been stationed.
Many of the older grandfather clocks or english tall case clocks as many people called them had a painting on the dial along side of the moons each dial has 2 moons to keep the calendar accurate.
Observe the current phase that the moon is in.
To set moon dial apply slight pressure with your fingers to the front of the moon dial.
Your moon phase will need adjusting periodically because the lunar calendar is 29 1 2 days long and our monthly calendar is 30 31 days long.
Now reset the moon dial with the observed moon phase.
To fix this problem open the door or panel by the clock face.
Grandfather clock moon dials consist of a round disk displaying two pictures of the moon.
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The moon dial or lunar phase dial is not of any practical use to most of us in our modern times.
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Step 6 check the level.
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Pull the click spring back about a half inch from the teeth of the moon dial and then allow it to fall back into place.
Step 5 the moon dial.
Sometimes the moon dial on a grandfather clock refuses to turn.
The moon dial on a grandfather clock also gave the manufacturers of the clocks to add a personal touch to their grandfather clocks.
Find the click spring.
You can rotate the moon by gently pressing the dial.
Another cause for the inconsistency could be the moon dial.
Rear of modern clock dial showing moon dial mechanism.
When the center of the moon dial on your grandfather clock points to the 10 the lunar calendar is 10 days old and that will reflect what the moon will be that evening.
A one half rotation of the disk occurs every 29 5 days which is one lunar cycle.
Its place on current production grandfather clocks is more out of a sense of tradition than anything else.
Clock parts is a manufacturer and distributor of clock movements parts and mechanisms.
Offering electric battery and quartz clock movements to replace or repair old clock mechanisms with new clock parts.
Moving the moon dial.