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Issue with Geneve Ref # 166.070

Candle00
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Hi OF,

I'm having an issue with my Geneve Ref # 166.070 (Caliber 565 auto movement).

The seconds hand has pretty much stopped moving. No natural movement will get it going. When I wind the crown (no difficulty doing that) it moves the seconds hand forward slightly. Also, if I shake the watch that moves the seconds hand forward slightly. It's almost as if something is loose.

I can pull out the crown and set the time and change the date. No issues there.

The previous owner had the watch serviced in the past 12-months and I'm not aware of any damage/hard knocks to it whilst in my possession. Sorry that it's a bit of a vague description but any thoughts on what might be the issue?

IMG-3602.jpg
 
Sherbie
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If the watch is fully wound ( which i presume it is), do the hour and minute hands still move, and keep exact time?
 
Spruce
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I had a recent problem with a Seamaster with a 565 movement in which the sweep second fell off. My watch repairer checked it out and was able to squeeze the sweep second tighter so that it gripped the stem.
He explained that these hands are only applied by pressure and sometimes the stem of the hand loosens.
If the hand stem were to be cracked, it would need to be replaced.
I may have misremembered the technical terms but you probably need to get it looked at by a proper repairer.
Shouldn’t be an expensive problem.
Yours is a nice looking watch btw.
 
Candle00
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Sherbie Sherbie
If the watch is fully wound ( which i presume it is), do the hour and minute hands still move, and keep exact time?

They don't which gives me the sense that something is disengaged....
 
Candle00
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Spruce Spruce
I had a recent problem with a Seamaster with a 565 movement in which the sweep second fell off. My watch repairer checked it out and was able to squeeze the sweep second tighter so that it gripped the stem.
He explained that these hands are only applied by pressure and sometimes the stem of the hand loosens.
If the hand stem were to be cracked, it would need to be replaced.
I may have misremembered the technical terms but you probably need to get it looked at by a proper repairer.
Shouldn’t be an expensive problem.
Yours is a nice looking watch btw.

Great, thanks for the input. Much appreciated.
 
Archer
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Candle00 Candle00
They don't which gives me the sense that something is disengaged....

Is the hand flopping around if you just tilt the watch side to side?

Well, the sweep seconds pinion that the seconds hand is attached to, is held in place by a friction spring. That spring holds it in place so it can be driven by the third wheel teeth. There may be a chance that the pinion has shifted somehow so that it is no longer meshing with the third wheel. A watchmaker should e able to remedy this by opening the case, removing the automatic winding system, and resetting the sweep seconds pinion.

It could be that the hand is also lose, but if it is I would expect it to still move in a somewhat normal manner, just a bit more erratic.
 
Candle00
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Archer Archer
Is the hand flopping around if you just tilt the watch side to side?

Well, the sweep seconds pinion that the seconds hand is attached to, is held in place by a friction spring. That spring holds it in place so it can be driven by the third wheel teeth. There may be a chance that the pinion has shifted somehow so that it is no longer meshing with the third wheel. A watchmaker should e able to remedy this by opening the case, removing the automatic winding system, and resetting the sweep seconds pinion.

It could be that the hand is also lose, but if it is I would expect it to still move in a somewhat normal manner, just a bit more erratic.

The hand sweeps forward around 1 second if I gently rock the case
 
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