seiko 7009 Seiko 7009 escape wheel damage?

[jamesb]

I recently bought a Seiko 5 7009 which turned out to only run intermittently. After taking it apart and giving it a clean I went to reassemble but struggled to get the escape wheel and pinion to sit between the jewels. I think it looks like it might be slightly damaged at the top and was wondering if anyone agrees? It's part number 251012 and I've attached some images below.

 

If it does need replacing does anyone have recommendations of where to find them in the UK, the only ones I can find seem to cost more than a donor non-running movement. Is it a part that is commonly broken or would people take the risk on a donor?

Thanks, James

[oldhippy]

The pivot has broken off. Watch supplies might be able to help, you will find some at the top of this page click on Resources and just follow. As this is your first post we like new members to make an introduction telling us a bit about yourself and where you life also interests if you wish.  

[Malocchio]

You're right, the pivot is broken. Donor movements are cheap, often something like 10 €. There's usually nothing wrong with escape wheels.

[jamesb]

Thank you both for the help, I've added an introduction and will take a look at the recommendations

[oldhippy]

2 hours ago, jamesb said:

Thank you both for the help, I've added an introduction and will take a look at the recommendations

Thank you for your intro. 

[Nucejoe]

Escape pivot spins highest speed in gear train thus is the thinnest and break easy.

 To install the new one, do not fully tighten bridge screws in one go, tighten in increments and each time make sure the pivot hasn't jumped out of its hole. Jewels to it must be checked too, when pivot broke it might have chipped the jewel hole.

Rgds

 

Edited March 18, 2024 by Nucejoe