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Discussion Starter #1
Hi!
My first post here and it's a question, is it possible to repair a chronograph wheel to a 6138 movement ? i've found the parts on a couple of sites who sells watch parts, they sell them for repair or parts.

Regards.
 

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Hi!
My first post here and it's a question, is it possible to repair a chronograph wheel to a 6138 movement ? i've found the parts on a couple of sites who sells watch parts, they sell them for repair or parts.

Regards.
That really depends what is wrong with it....

I have repaired two different failure modes....
A lose/wobbly forth wheel on a 6138b. 'Repaired' using a little metal putty to carefully keep the forth wheel pushed evenly off the clutch plate that you get on the 'b' movements. Not a great repair but the only option to me at the time and it worked perfectly.

And if you find that the clutch spring is no longer effective I find it is possible to put a little bend in the spring to make it function once again.
 

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Discussion Starter #4
Thanks for the welcoming, and for the answer, but if i have a chrono wheel with a broken tap is it possible to swap the clutch to an other with a okay tap, it seems like the spring is broken, it just wobbling around.

Regards.

a couple of pics:
 

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Thanks for the welcoming, and for the answer, but if i have a chrono wheel with a broken tap is it possible to swap the clutch to an other with a okay tap, it seems like the spring is broken, it just wobbling around.

Regards.

a couple of pics:
Just to check...what do you mean by 'tap'?...do you mean 'tip'....the end bit where the sweep hand attaches?

The spring looks pretty bad...but in this case why is it so? Is there a kink in it that can be bent back?

The only bit that I have ever been able to replace happily is the 'finger' on top of the assembly. Prise off the the little brass ring (it will fly across the room...) and then the finger part comes off....but that is it.
 

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Discussion Starter #6
Yes of course i meant the tip, English is not my native language you know, i guess it rather impossible for a home fiddling watchmaker to do this, may be hard for a professional watchmaker to accomplish this, and yes, the spring do not look okay.

I recently bought the watch on the bay, a so called "UFO" 6138-0011 so i don't know anything about the watch and i probably paid too much for it, it was a non working watch so it was a gamble, have to start hunting for a replacement then, i guess it's almost as hard as try to repair it.

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:) don't worry, English IS my first (and only) language and I make so many spelling mistakes you'd think I'm just having a first go at it! Mostly I blame my iPhone :)

Sure if the tip is snapped off you are going to have to throw that away I'm afraid.
Finding new parts is near impossible :(
Picking up and old beater 6138 shouldn't be too bad, them you might find it has useful spares for your next seiko 6138 purchase :)

This type of thing would be good for you....201150328333 I'd normally have picked this up but I have too many now!

I'll check what I can find for you either on eBay or on my spares drawer....

Are you inclined to fix this yourself? I see of course you have stripped it apart ok! Well good luck with it, such an enjoyable thing to do!

If you wanted to send this off to be fixed then I could do that for you-except for having far too much work already :( but also 'cannop' here in the uk you should try.

Good luck,
 

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Discussion Starter #8
Hi!
I guess picking up an old beater is also a gamble, it can be even worse, but i guess it is the only way to go, and by the way what's appropriate to pay for a chrono wheel, if i find one?
Thank you for your nice offer to keep an eye open, i have fiddling with watches a short while and find it both frustrating and satisfying, this is my recent object, complete disassembly, cleaning and so on:
 

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Hi!
I guess picking up an old beater is also a gamble, it can be even worse, but i guess it is the only way to go, and by the way what's appropriate to pay for a chrono wheel, if i find one?
Thank you for your nice offer to keep an eye open, i have fiddling with watches a short while and find it both frustrating and satisfying, this is my recent object, complete disassembly, cleaning and so on:
That's nice and good work.
You won't find those listed for sale much. I once came across an auction for 3 at approximately £12 each, all sealed in the little packs. I brought them all off the seller within a fee minutes if him listing them...he was a tad annoyed he hadn't listed them higher ;)

Looking out for beaters to use as spares is teally the best way, especially if you have your sights on more 6138 and 6139....


But careful: 1 year from now you have a spares drawer with this lot in....


 

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Discussion Starter #10
Wow, that's impressive :eek:hmy:, is that what they call addiction, maybe a Seikoholic ;), but i'm on a tight budget so this is off limit for me. More problems, can't find the wheel lever plate, it just vanished, very annoying, but i found one on the net so it's solved.

B t w what is the main difference between 6138 A and B ?

Regards.
 

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Wow, that's impressive :eek:hmy:, is that what they call addiction, maybe a Seikoholic ;), but i'm on a tight budget so this is off limit for me. More problems, can't find the wheel lever plate, it just vanished, very annoying, but i found one on the net so it's solved.

B t w what is the main difference between 6138 A and B ?

Regards.

There are a few differences and you need to be careful, not all parts can be exchanged between the two. The chrono assembly for example is different...an A version does not work in a B and vice versa....you need the correct one :(
 

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Discussion Starter #12
Hi!

Have been searching the net for anything about this matter, and this is the only thing i found. Ranfft: Sophisticated excenter self-winding mechanism with just one gear stage like 6138A, only minor modifications of switching mechanism (dial side)

can you explain which parts who differ? i hope you understand that i am not questioning your knowledge.

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There should be more info out there than that.... Maybe try the scwf search!?

There are many subtle changes...whilst they look exactly the same actually only a few parts interchange. The best thing is to download the two tech files (available in the scwf). Compare the parts listing for 6139a and 6139b and 6138a and 6138b.

Let me know what you need...

T

(Spelling mistakes corrected...hopefully)
 

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Discussion Starter #16
I'm not in need of parts right now, but i will have that in mind for future needs, thank you :), i've just come over a chrono wheel but probably overpaid for it,as usual, but i guess access and demand makes them expensive.

Yes you're quite right, there are several differences between the movements, this is what i found out:
Maybe someone else appreciate this
 

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