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The UHF tunes like an old radio, using a very small variable capacitor. The brass shims go between the tuning shaft and the compartment walls to provide a solid ground as the tuner rotates. They are tack soldered in and should be removed, cleaned and buffed, bent slightly and replaced. Of course it an earlier time you would just change them. They cost about a dime at the time.
Sometimes it is possible to clean them in place with a solvent and clean the contact surfaces with a relay burnishing tool or some other fine abrasive.
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01-14-2009, 11:43 PM
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