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Mike
Mike, Consultant
Category: Clock Repair
Satisfied Customers: 2942
Experience:  I've been active in clock repair for 14 years - NAWCC member.
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How do I keep the time correct by adjusting the pendulum of

Customer Question

How do I keep the time correct by adjusting the pendulum of our Herschede Grandfather clock. It always runs fast no matter how I turn the end of the pendulum right or left.
Submitted: 1 year ago.
Category: Clock Repair
Expert:  Mike replied 1 year ago.

Hi, My name is ***** ***** it is my pleasure to assist you. By turning the rating nut to the right the disk will raise, which will make the clock faster while turning it left will lower the disk and make the clock slower. The rule of thumb is 1 turn of the regulating nut equals 1 minute per 24 hours, but your results may prove different and that is what makes the note keeping important to your success. By recording your actions 3 or 4 daily sessions is normally all that is needed. You should not try or expect to correct the error in one session, but rather try to split the difference by half each session, slowly sneaking up on the error without over shooting or see-sawing back and forth. If there is no difference you might have to reset the pendulum bob to make sure it is moving properly up & down. The purpose of the adjustment nut is to move the pendulum bob ( the large disk) up or down. Sometimes on older clocks the pendulum parts get tight or frozen and you might be moving the nut, but the pendulum bob stays frozen.

1) Take off the pendulum and place it backside up on a soft working surface.

2) Add a drop of clock oil (synthetic) on the threaded rod just above and below the nut.

3) Make sure the top of the nut is in the slot as shown.

4) Rotate the nut up and down the rod to evenly distribute the oil until the rotation feels smooth.

Make sure the “Bob” ( the disk) is moving up and down with the movement of the nut. It is not unusual for the nut to move down, but the bob stuck above the nut. Good lubrication and making sure the top ridge of the nut is in the slot will correct this issue. Try these option out and let me know what happens and if you don't feel comfortable doing this yourself if you want I can find a clock repair company in your area just let me know your zip code location and by what major cities and I'll find a few in your area. Thanks Mike

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Expert:  Mike replied 1 year ago.

Hi, I was wondering if you need further assistance with your clock? Thanks Mike

.

PLEASE remember if you're satisfied with my answer rate my answer
by using the STARS so I will be compensated by JustAnswer for helping you.

Expert:  Mike replied 1 year ago.

Hi, I was wondering if you need further assistance with your clock? Thanks Mike

.

PLEASE remember if you're satisfied with my answer rate my answer
by using the STARS so I will be compensated by JustAnswer for helping you.

Expert:  Mike replied 1 year ago.

Hi, I was wondering if you need further assistance with your clock? Thanks Mike

.

PLEASE remember if you're satisfied with my answer rate my answer
by using the STARS so I will be compensated by JustAnswer for helping you.

Expert:  Mike replied 1 year ago.

Hi, I was wondering if you need further assistance with your clock? Thanks Mike

.

PLEASE remember if you're satisfied with my answer rate my answer
by using the STARS so I will be compensated by JustAnswer for helping you.