Observe the current phase that the moon is in.
Grandfather clock 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.
Find the click spring.
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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Its place on current production grandfather clocks is more out of a sense of tradition than anything else.
To set moon dial apply slight pressure with your fingers to the front of the moon dial.
Offering electric battery and quartz clock movements to replace or repair old clock mechanisms with new clock parts.
Sometimes the moon dial on a grandfather clock refuses to turn.
Another cause for the inconsistency could be the moon dial.
The click spring is located just behind the moon dial itself.
If you have a grandfather clock with moon phase follow these instructions.
Choose from quartz clock movements like time only chiming and pendulum to atomic clock movements and other specialty clock movements.
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.
Check the platform where the grandfather clock has been stationed.
You can rotate the moon by gently pressing the dial.
The moon dial on a grandfather clock also gave the manufacturers of the clocks to add a personal touch to their grandfather clocks.
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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 6 check the level.
Now reset the moon dial with the observed moon phase.
Rear of modern clock dial showing moon dial mechanism.
The moon dial or lunar phase dial is not of any practical use to most of us in our modern times.
Moving 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.