How to Replace Tuning Keys
On stringed musical instruments, tuning keys secure the strings and provide a tuning mechanism for the instrument. They can be made of wood or metal and come in many different styles and configurations. For example, tuning keys for violins can be simple wooden pegs, whereas tuning keys for a high-end electric guitar may involve a combination of gears and locking devices. No matter the design, tuning keys are an essential part of any stringed instrument and may require replacement during the life of the instrument.
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Instructions
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Evaluate existing tuning keys to determine style and layout, as well as the proper replacement. If replacing with a new style, verify that the new keys will fit and operate correctly.
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Obtain replacement tuning keys from your local music store or from an online retailer. While many manufacturers offer high-quality tuning keys, keys from the instrument's original manufacturer may often be the best-suited choice.
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Carefully remove existing strings from the instrument. Because of the stress and tension applied to strings, they can break during removal, resulting in injury or damage to the instrument.
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Remove any screws, nuts or other hardware securing the existing tuning keys. Be sure to keep these items together with the old tuning keys in the event that you are missing a part from the new keys or need to replace the old tuning keys for some reason.
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Clean empty tuning key holes and areas of the instrument around the holes. If necessary, fill old screw holes with wood filler and allow to dry prior to installing new tuning keys.
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Check placement and fit of new tuning keys in existing holes. Make any adjustments or alterations to ensure proper fit and operation of the new tuning keys.
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Install new tuning keys according the instructions provided by the manufacturer. Once installed, verify correct operation and movement of the keys. Recheck screws and other hardware for secure fit.
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Re-string instrument using the new tuning keys. Again, verify that the new tuning keys operate correctly before applying full tension to the strings.
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Tune the instrument to full tension and test operation of the keys under normal circumstances.
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Tips & Warnings
Wear safety glasses when removing strings to prevent eye injury.
Using a cloth or tape around the end of pliers, screwdrivers or other hand tools will help prevent damage to the tuning keys or instrument during replacement.
Never force new tuning keys into existing holes. Replacements should fit easily into the space in order to provide correct operation.
