I if the clock is running fast turn the pendulum nut counterclockwise to decrease the rate.
Pendulum wall clock runs slow.
If the clock is running slow turn the pendulum nut clockwise to increase the rate.
Lengthen the pendulum by moving the bob down.
To slow the grandfather clock down move the pendulum disk down by turning the adjustment nut to the left.
Pendulum bob with rate adjustment french time and strike.
Push the bob up to make the clock run faster and push the bob down to make it slower.
The bob will settle lower making the effective length of the pendulum longer.
This is adjusted by turning the nut at the bottom of the pendulum.
The pendulum disk is moved up or down by turning the adjustment nut.
Each turn of the screw slows the clock by two minutes per 24 hour period.
The shorteryou make the pendulum the fasterthe grandfather clock.
Check your adjusted clock against a reliable timepiece several times over the course of a day and continue making adjustments until your clock reads correctly.
Adjusting the pendulum shorter will cause your clock to run faster while lengthening it causes it to run slower or simply put speedup slowdown in the pendulum regulation diagram below look for the rating nut at the base of the pendulum which is what raised or lowers the pendulum disk or bob.
Understanding the mechanics of your cherished time piece will help you fix problems that can occur without having to drag the clock to a repair specialist.
Changing the speed of time keeping is accomplished by moving the pendulum disk up or down.
The length of the pendulum determines how fast it swings so you need to either lengthen or shorten it.
To speed up the clock tighten the nut turn it toward your right.
This is probably just because your pendulum is moving too fast or too slow.
It runs too fast.
Moving a clock to a higher elevation will slow it down as the air is thinner.
To slow down the clock loosen the adjustment nut turn it toward your left.
If your pendulum clock has lost its best beat you can get it back in time with a bit of beat education and simple tools.
Denser air causes the pendulum to move more slowly.
Speed up turn nut left to right slow down turn right to left the longeryou make the pendulum the slowerthe grandfather clock.
Turning the screw to the left will lower the pendulum slightly and slow down the clock.