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Re: Register key clicking noise

Author: Tony F
Date: 2017-09-10 03:59

Where the small leaf spring under the register key slides against the clarinet body some makers put a small groove, and in some cases this groove has a sliver of metal in it to provide a smooth surface for the spring to slide along. Sometimes the groove is just left as unlined wood or plastic and sometimes there is no groove and the spring just slides along the clarinet body. Depends on the maker.

The end of the spring is generally, but not always turned up slightly so that it doesn't dig into the bottom of the groove. It's important that there be some lubrication under the spring, otherwise over time the spring can dig a small ridge in the groove or even actually wear through the thickness of the spring.

If you remove the key carefully examine the point where the spring contacts the clarinet body to see if there is a step there, and also examine the end of the spring for evidence of wear. In extreme cases I've seen the end of the spring is worn away to the point where the upcurved tip breaks off. A tiny spot of grease under the spring prevents this problem.

If you find the spring damaged then it will need replacement. If there is a step in the groove it can be removed, but if you're not sure how to do it then leave it to a tech.

This can also be caused by a lack of lubrication between the pivot rod and the key, so check that as well.

Tony F.

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