The moon dial on a grandfather clock also gave the manufacturers of the clocks to add a personal touch to their grandfather clocks.
Grandfather clock moon dial repair.
Many grandfather clocks incorporate a moon dial.
If when moving your grandfather clocks moon dial you feel any resistance or the moon dial will not turn at all stop trying to move the moon gear and come back later and try again.
Find the click spring.
To set moon dial apply slight pressure with your fingers to the front of the moon dial.
Open the glass and push gently on the dial.
Now reset the moon dial with the observed.
To fix this problem open the door or panel by the clock face.
The click spring is located just behind the moon dial itself.
Grandfather clock moon dials consist of a round disk displaying two pictures of the moon.
If you have a grandfather clock with moon phase follow these instructions.
Some grandfather clock moon dials spin freely and others have a click stop so you will hear the moon dial clicking as it turns.
Depending on how basic or advanced your moon dial is it may be more or less detailed or advanced.
This sophisticated piece of technology is designed to show the shape of the moon as it appears in the sky as well as the lunar date.
Minutes hours and days.
Stuck pendulum and moon dial problems.
Be certain the weights are pulled up.
If the pendulum is stuck open the glass and disentangle the clock hands.
Sometimes the pendulum can disrupt the grandfather clock movements.
Another cause for the inconsistency could be the moon dial.
A one half rotation of the disk occurs every 29 5 days which is one lunar cycle.
If the clock is running slow move the pendulum up the shaft and if it is running fast move it down.
If you re repairing a grandfather clock s moon dial start by checking the phase.
Ways to clean a grandfather.
Step 5 the moon dial.
Turn it slowly to the current phase.
Mechanically speaking the moon dial exists in conjunction with timekeeping devices grandfather clocks most frequently simply because the passing of the moon is easily relatable mathematically and mechanically to the passing of time.
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.