Reply To: Grandfather clock gets stuck in last 15min of hour

[david pierce]

Dan,
First check to see if anything is rubbing against anything else. If everything is ok check all of the gear meshing points when the movement is in the stopped position. There may be a piece of crud stuck in the gear teeth or there may be a tooth that is messed up. If it is an old clock the pinions may be ground down to a point of unreliability. The leaves of the pinions must be flat radial surfaces. The curved portion of the wheels (the addendum) rolls against this flat surface. If the contact points are worn or jammed it will cause problems.
david