How to Remove a Grandfather Clock Mechanism

Grandfather clocks are popular mechanical timepieces. The mechanism, or movement, is powered by a system of weights. The weights pull down on toothed wheels that advance a series of internal gears. These gears work the hands of the clock, and also any chimes or gongs. The time itself is regulated by the swing of a pendulum. Removing the grandfather clock mechanism may be necessary for certain repairs.

Things You'll Need

• Grandfather clock
• Pliers
• Screwdriver

Instructions

1. Take the bonnet off the top of the clock. The bonnet is the wooden case that encloses the clock face and mechanism. Unhook the weights from the chains or cables in the grandfather clock case.

2. Remove the pendulum from the grandfather clock. The feather, or suspension spring, at the top of the pendulum rod is attached to the crutch. The crutch is a thin wire that is connected to the outside of the clock mechanism. Carefully pull the feather through the loop at the bottom of the crutch.

3. Unscrew the nut on top of the clock hands. Use pliers if the nut is tight. Pull off the clock hands by grasping them near where they connect to the clock face. If the grandfather clock hands have a pin instead of a nut, pull the pin out, and remove the hands.

4. Remove the back of the clock by moving the clips that hold it in place. Use the screwdriver to unscrew the chime block. Remove the chime block and attached chime rods.

5. Use the screwdriver to unscrew the two long bolts that join the mechanism to the clock case. Lift the mechanism out of the grandfather clock.

Tips & Warnings

• Keep the chains, or cables, attached to the grandfather clock mechanism. Do not remove them unless absolutely necessary for repairs.

• Some clock backs are actually screwed shut. If the back of the grandfather clock is screwed shut, use the screwdriver to remove the screws.

References

• Removing the Movement
• Opening the Grandfather Clock and Removing the Movement
• Removing the Pendulum