How to Reattach a Pendulum on a Grandfather Clock

Have you ever wondered how to reattach a pendulum on a grandfather clock? This article will show you step by step how to do it. The process is not difficult and can be done in just minutes! Let’s get started! First, remove the pendulum from the clock movement. Use pliers for this part. Next, use needle-nose pliers or long nose pliers for this next step.

How to Reattach a Pendulum on a Grandfather Clock

Take the wire that is connected at both ends of the pendulum and pull one end up until it reaches about 1/4 inch above its previous position while pushing down on the other side with your hand, allowing for enough space to insert two fingers. Once you can put one finger on each side of it, get your needle-nose pliers and stretch the wire so that there is enough slack to wrap it around a pencil. Read on to know more!

8 Benefits of Reattaching a Pendulum on a Grandfather Clock:

1. Increased Accuracy:

When the pendulum is reattached to the grandfather clock, it will be back in sync with its internal time-keeping mechanism. This will cause the clock to start ticking more accurately.

2. Balance Wheel Movement:

For a clock that does not have a swing pendulum, the reattaching of the pendulum will cause the balance wheel to start moving again. The movement of this wheel is what keeps the time in a mechanical clock accurate.

3. Reduced Stress:

With a grandfather clock, removing or opening up too much can also damage delicate mechanisms. Creating a safe way to remove the pendulum allows for less stress on certain parts of the clock.

4. The Clock Keeps Accurate Time:

The accuracy of the time is essential for people who make appointments or run businesses based on time. Having an accurate clock can help avoid missed meetings and ensure that deadlines are met.

Having an accurate clock can help avoid missed meetings and ensure that deadlines are met.

5. Clock Keeps its Original Integrity:

Removing the pendulum is usually done during service or if it stops working. When this happens, it can damage or alter the features of an antique clock. Reattaching it will ensure that everything stays in its original condition when purchased, including any recently done work to fix the timepiece.

6. Conserves Original Parts:

If the clock starts having problems, taking off the pendulum for repair will help ensure that any original components remain in their current condition. If this is not done, it can replace parts and even need a complete restoration of the grandfather clock.

7. Maintaining Value:

For those interested in obtaining an antique grandfather clock, restoring it to its original state will help ensure that collectors see Value in the timepiece. But, unfortunately, this may lead to a higher price when auctioning or reselling the item.

8. Easy Clock Storage:

Clocks are fragile objects that can be easily damaged if they are mishandled or stored for a long time. By attaching the pendulum to a grandfather clock, keeping it appears to be more manageable and can prevent damage while being kept in storage.

What Tools You’ll Need?

Tools you’ll need to reattach a pendulum on a grandfather clock include:

  • Phillips head screwdriver (preferably the size for clock repair)
  • Small pliers or tweezers
  • Clock oil
  • A small container for clock oil
  • Needle nose pliers
  • Spring bar tool (found at clock or jewelry supply stores)

Instructions: How to Reattach a Pendulum on a Grandfather Clock 

Step 1:

Take out any weights that are on top of your grandfather’s clock. The pendulum should come right off, provided you don’t have a glass case around the clock. If it doesn’t, you can remove the glass and take off the pendulum by removing the screws that hold the weights in place and taking out the weights.

Step 2:

Attach a new weight to your grandfather clock and put up your pendulum. Most grandfather clocks have an adjustment screw for this purpose on each side of the clock. You can tighten or loosen it to make the pendulum swing at the speed you want.

Step 3:

Remove all of your old oil, if necessary. If your grandfather clock needs new oil (which is unlikely), use a small container to hold the clock oil and drip it very slowly onto each gear while turning them until they are all well lubricated. This is best done with the weights up so you can turn the gears while you oil them.

Step 4:

Rehang your grandfather clock pendulum and check to make sure it’s running smoothly. If not, go through the above steps again until it does run smoothly. Make sure you don’t over-tighten any of the screws, or else the pendulum will be too hard to swing, and it won’t run smoothly.

Step 5: 

Hang your weights back up on the pendulum. Make sure your grandfather clock runs for about eight hours as a test to ensure everything is working correctly.

Grandfather Clock Repair Tips

1. Be careful when you lift the weights off not to pull any of the gears out of line. If you do, they will not be easy to put back. And if you lose one, it is nearly impossible to find a replacement.

2. When you take the weights off, do not knock them together as this could knock out some of the bypasses on the bottom plate, which keep the pendulum going and keep the clock from stopping when it runs down.

3. If the pendulum is broken when you take the clock down, be very careful when you lift it off not to break any of the pieces off in the works.

If the pendulum is broken when you take the clock down, be very careful when you lift it off not to break any of the pieces off in the works.

4. Always handle with care when repairing a grandfather clock. Things are out of alignment, and parts are pressed or stressed beyond their normal working range.

5. It is best not to lift the weights too high off the floor, so you do not stress the clock’s suspension spring system. Also, if you have a pendulum-type regulator, it will be hard to get your first set point needed for the clock to run.

6. When you get the weights off, keep them together because if one of them is lighter than the other, that weight will run faster and may knock over something when it gets going.


The pendulum is an essential part of the clock because it regulates the movement of the hands. Without a pendulum, there would be no way to keep time or handle that all-important ticking sound. So if you’ve lost your grandfather’s beautiful antique clock and are looking for help reattaching the pendulum, this article on how to reattach a pendulum on a grandfather clock should give you some valuable information about doing so.

The pendulum should be reattached to the weight and then placed back on its rod. That’s all there is to it! This article has provided a step-by-step walkthrough of how to reattach a pendulum onto your grandfather clock successfully. If you have any questions or need additional assistance with this process, feel free to contact us!

You may read also – How to Make a Pendulum That Never Stops

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