Check to see if the spring is in working order.
How to fix a wall clock pendulum.
A pendulum too high causes the clock to run fast.
If dried oil is visible gently brush it away.
Inspect the battery compartment for corrosion you will likely see a bloom of blue and white or green and white mold around the ends of a battery.
Check your clock with a bubble level and find where it needs to be shimmed.
Locate the adjustable weight or screw mechanism near the pendulum arm.
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.
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.
If no pendulum is attached your mantle clock may be regulated by a balance wheel which is operated by a spring.
Wind the spring as far as it will go.
Open the back door of the clock carefully with a small screwdriver.
Lengthen the pendulum by turning the screw mechanism to the left 1 2 turn.
Bend the clock verge back into position with a set of needle nose pliers instead of shimming your out of beat clock.
Dried oil and debris can clog and stop the clock mechanism.
Dabbing a few drops of clean oil on the area then restarting the pendulum should get the clock running again.
Too low causes the clock to run slow.
Brushing the mechanical works with a soft brush such as a paint brush should dislodge any dust or dirt.
The verge is the wire from which the pendulum hangs.