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Seiko 6309 balance wheel issue after reassembly

oli

By oli
in Watch Repairs Help & Advice

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oli WRT Addict

oli

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Hi all

i have just disassembled, cleaned and reassembled an old 6309 today (an Indian watch which can claim the award for the filthiest watch I have ever worked on!)

I cannot work out why the balance wheel is now very stiff, and lacks endshake. It feels like the Diashock jewels are too tight against the balance staff pivots. (I did remove, clean reassembled and lubricated the diashocks jewel as part of the service)

The watch was fine before i worked on it, albeit running very badly, so I just cannot work out why I cannot put it back together! I have done a few of these movements before with no issue.

if i unscrew the balance cock screw a just quarter turn, the balance wheel then works fine.

i don't really want to adjust the balance cock height, as it was fine before, so there must be a way to resolve this!

Any views/ ideas? 

Edited by oli
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rogart63 Distinguished Member

rogart63

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Check the jewels? Couldn't figure out why the my  Vulcain movement wouldn't run today? Only on one side? I then took the jewel out and looked at it? It was full of old oil :) . I cleaned it again and picked all the old oil out. Runs like a champ. So check the jewels and maybe the after that the settings. Could be that it's runs a little different after the cleaning?

Had cleaned it in the Ultrasonic bath. But the watch has been in a drawer for the past years. 

Edited by rogart63
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oli WRT Addict

oli

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Gents, thank you so much for all the pointers.

I will take out the diashocks again and report back!

i know the diashocks have a curved side, but it is possible I could have "flipped" the jewel on itself without noticing before fitting it in the setting.

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oli WRT Addict

oli

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I took out the cap jewels earlier today, gave everything a good clean (although I could not see any sign of ovious dirt or contaminant), refitted them and all is well now!

I am still none the wiser as to what happened... I think somehow one of the jewels was not seated properly on the pivot.

many thanks all for your advice

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ricardopalamino Distinguished Member

ricardopalamino

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Sounds like a happy ending . A similar situation occurred with one of my watches recently . After cleaning and refitting  , the balance seemed to be dragging . It turned out to be junk in the bottom pivot hole . Re-cleaned the jewels and swabbed out the pivot hole with my smallest oiler and it ran fine after that .

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oldhippy Distinguished Member

oldhippy

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8 hours ago, oli said:

I took out the cap jewels earlier today, gave everything a good clean (although I could not see any sign of ovious dirt or contaminant), refitted them and all is well now!

I am still none the wiser as to what happened... I think somehow one of the jewels was not seated properly on the pivot.

many thanks all for your advice

All sorted and the watch is working well. Good for you.

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