Balance Question

[Pip]

I have had a slight mishap with the balance on a Seiko 6309A that I am practising on, and have managed to pop off the diashock assembly. I can see from the tech guide how it fits together but can't quite work out how to actually do it; not sure how to line it all up and then how to refix the diashock. Is there a particular tool or method best used for this? Diagram below should explain what I mean.

 

Thanks as always,

Pip

[jdm]

If you search "diashock" in this forum you will find a lot of threads with hints.

Also please give a look to some parts naming document, because isn't clear what you mean.

It also  helps to watch some videos, of course Mark's ones are very good.

Edited February 15, 2017 by jdm

[jdrichard]

Just ease the three elbows of the spring into the groove, one at a time as you rotate the spring.


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[ftwizard]

If I'm understanding you, then the whole assembly has popped out of the balance cock.
It doesn't fit on the balance staff, it pushes into the recess in the cock.


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[oli]

If the 3 parts you circled are in one unit, i would separate the bottom two (chaton and jewel) from the top one (spring)

 

place the chaton and jewel assembly on the balance cock in the hole. It is easier to do that with the balance cock installed in the movement. The assembly should fit nicely on top of the balance staff., with the pivot going into the chaton.

 

then lock the assembly in place with the spring. Be careful, the spring will ping at any opportunity! It may be prudent to locate the spring on the chaton/jewel assembly using rodico to avoid losing it. Then you just need a steady hand to rotage the spring into place, i use 2 pairs of tweezers, or one pair and a sharp pegwood. There are 3 "arms" on the spring, they all need to go into the groove in the cock which is located around the chaton/ jewel assembly.

i usually insert 1 arm when i place the spring on the assembly, and then rotate the spring to fit the other 2 arms in the channel, pushing gently on the arm i want to fit in the channel whilst rotating the spring.

 

hopefully i have interpreted your question correctly and the above is of help!

good luck with it

 

 

Edited February 15, 2017 by oli

[Pip]

Thanks guys for the great answers. @ftwizard and @oli I think you've cracked my problem that I struggled to explain well. I will follow the advice and I've read somewhere (this forum maybe?) that when one is a beginner as I am that when manipulating diashock springs, do so inside a large clear plastic bag where possible to prevent it leaving the earth's atmosphere.

[oli]

Yes that's a good tip, a large polybag with small holes for the tweezers works well