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Hamilton 987-E Balance End Stone

les13

By les13
in Watch Repairs Help & Advice

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Klassiker Distinguished Member

Klassiker

Posted
Posted

You need to release the stud, that's the triangular piece, by loosening the screw, bottom right. Then you can remove the balance from the cock and clean and oil the jewels from the other side. There may even be screw heads there, to allow disassembly.

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Marc Distinguished Member

Marc

Posted
Posted
25 minutes ago, Tudor said:

I think the top pivot is out of the jewel in the top and pulling the hairspring to one side.

Very true, I think also the angle of the shot may make things look out of shape when they're not.

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les13 Member

les13

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Posted

When I first pulled the balance I noticed the hairspring was not centered. I ran the whole piece over the demagnetizer, but there was no change. I will disassemble, as advised, and oil the jewel and see if I can improve the hairspring.

Thanks everyone for the help.

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