The solution can damage insulation on the solenoid. Some parts on clocks are very fragile, so be gentle. You may also need a rinsing solution as part of the process. After the clock has been cleaned, allow it to dry completely before putting it back together. While you are at the clock shop, also pick up some clock oil.
Clocks have oil holes in the case.
This is where the oil goes. Do not put oil onto the teeth of the gears. Carefully oil all pivot wheel bearings. One drop is all that's needed. Once you feel the clock is oiled, put it back together.