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Seiko 7S26 assembly

Clicoon

By Clicoon
in Watch Repairs Help & Advice

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Clicoon Member

Clicoon

Posted
Posted

Finally well into my reassembly but lacking confidence/skill with placement of the balance assembly.

Finding it difficult to ensure the balance pin jewel is properly located in the pallet fork. Can't see to guide it in. 

If the balance wheel doesn't rotate sufficiently I presume the pin is not properly in the fork?

Studying Hacko helps. Mark's video just shows a quick drop-in and there she is, if only I could do as easily??

Any advice welcome.

 

WileyDave WRT Addict

WileyDave

Posted
Posted
5 hours ago, Clicoon said:

If the balance wheel doesn't rotate sufficiently I presume the pin is not properly in the fork?

You are correct in this assumption.

Check position of pallet fork, if banked to left or right, (looking at movement from side), it may be the  pin jewel position when you are trying to fit is opposite of fork, Seikos are pretty tough to see alignment, just not enough space! Also check position of pin, before insertion, is it aligned to position of fork? Hope that helps.

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jdm Distinguished Member

jdm

Posted
Posted

If jewels are installed, watch is wound and the balance does not oscillate when fit in, then impulse pin is not on the fork. In that case with the cock screw removed, feel in which direction the balance does not turn. Lift it a tiny bit, move further in that direction and let it go. Impulse pin should now be well settled and balance moving.


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