The oil in your clock has dried out and you need to have it oiled. This must be done by pulling the entire movement out, the face removed and the oil applied only to the oil sinks on the front and back plates of the clock. While this is being done it should be checked for any wear in the bushings. Unless you have experience with clock repairs I would call a professional in to do this. He can do it in your home.
Stevens Clocks, October 2009
