Cuckoo Clock Repair

Cuckoo Clock Repair Tips, Tricks, & Secrets!


Cuckoo Clock Repair
Troubleshooting Guide

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Pendulum will not swing
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Cuckoo clock repair

Pendulum will not swing
Runs too fast or slow
Replacing lost weights

Mantel clock repair

Pendulum will not swing
Runs too fast or slow

Wall clock repair

Pendulum will not swing
Runs too fast or slow

Replacing lost weights / cuckoo clock repair

cuckoo clock

Many of the post WWII cuckoo clocks have pine cone weights with their weight, in grams, visible on their sides* Since weights on a cuckoo (coo coo) clock are of equal weight, this makes it very easy if you need to order a replacement from a clock parts supplier. In the event you have a weight, without a marking, you can simply weigh it on an ounce scale and then convert to grams using the chart provided below. If you don't have an ounce scale, take a trip down to your nearest Post Office! Remember to convert ounces to grams. What if all the weights are missing from your cuckoo? The easiest way to find out the replacement weight is to attach just enought weight on the end of the cuckoo clock chain until either the time train or the strike/cuckoo train operates correctly. Then weigh in ounces, convert to grams, and order the closest weight available below.

* Some of the older cuckoo clock weights may have a single number mark on their sides, such as 1, 2, 3, or 4. These were part numbers used by workmen in the factories to help them match the correct weight to cuckoo being prepared for shipment, and are of no use in finding a replacement weight from the clock part supply companies.

The different Cuckoo Clock
weights, measured in grams and ounces, that you can order from the
clock parts supply companies

28.35 grams = 1 ounce
 110 grams  =  3.12 ounces
 150 grams  =  4.25 ounces
 200 grams  =  5.67 ounces
 250 grams  =  7.09 ounces
 275 grams  =  7.30 ounces
 320 grams  =  9.07 ounces
 375 grams  =  10.63 ounces
 420 grams  =  11.91 ounces
 500 grams  =  14.18 ounces
 630 grams  =  17.86 ounces
 750 grams  =  21.26 ounces
 875 grams  =  24.81 ounces
 1000 grams  =  28.35 ounces
 1170 grams  =  33.17 ounces
 1260 grams  =  35.72 ounces
 1350 grams  =  38.27 ounces
 1500 grams  =  42.53 ounces
 1750 grams  =  49.61 ounces

Wayne Berry, Certified Clockmaker
E-Mail: How to Repair Clocks

Last Modified: September 1, 2012
Copyright 2001-2014, All Rights Reserved


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