If you are talking about fixing the clocks in Charlotte's room for the first time, have you tried the following:
Use the antique key on the right side under the mantel. Press the lever. From left to right set the clock time to 10:00, 8:00, 11:00, 10:00 and 11:00, then pull the lever.
If you are talking about fixing the clocks at the end of the game, please let us know. Someone will have a saved game for you if needed.