This Ansonia crystal regulator came in with the complaint that it would quit every 3 or 4 days, the hour hand seemed to do whatever it wanted, and the strike count made no sense at all.
When they set the clock down a little pinion was laying on the floor inside the case.
In the photos you can see where the pinion is supposed to go and it appears that it is simply staked onto the arbor and controls the snail and the hour hand.
It is pretty beat up so I am assuming this is not the first time it has come loose and worked its way off the arbor. Staking it back on is not a problem, but what else might I do to keep this from happening again? Is this a common issue with these particular Ansonia movements? The arbor is round and smooth and looks like polished steel. The pinion staking has made one side of the hole almost square. It also has done quite a bit of damage to the back plate where I assume there was insufficient end shake, or perhaps just a lot of rotations in contact with the plate.
thanks
tom
When they set the clock down a little pinion was laying on the floor inside the case.
In the photos you can see where the pinion is supposed to go and it appears that it is simply staked onto the arbor and controls the snail and the hour hand.
It is pretty beat up so I am assuming this is not the first time it has come loose and worked its way off the arbor. Staking it back on is not a problem, but what else might I do to keep this from happening again? Is this a common issue with these particular Ansonia movements? The arbor is round and smooth and looks like polished steel. The pinion staking has made one side of the hole almost square. It also has done quite a bit of damage to the back plate where I assume there was insufficient end shake, or perhaps just a lot of rotations in contact with the plate.
thanks
tom



