Eta Co1211 - Any Technical Reference Available?

[steven]

Recently received this Tissot PRC200 for repair but can't find any technical reference online. Has anyone had any technical documents of this caliber CO 1211 to share?

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Edited March 4, 2016 by steven

[steven]

Is this even a genuine ETA movement? It escapement is of plastic material -pallet fork and escape wheel.

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[bobm12]

 

Is this even a genuine ETA movement? It escapement is of plastic material -pallet fork and escape wheel.

Tissot tends to do that once in a while so it may very well be. I'm not familiar with this movement but I have a feeling parts are not going to be easy to find. In any case, I hope for a successful result.

 

Cheers,

 

Bob

[steven]

Having second thoughts to disassemble further.....

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Edited March 4, 2016 by steven

[Marc]

I did a bit of trawling for ETA C01.112 tech sheets but came up empty handed, although there seems to be quite a lot of discussion about them.

What did come to light though was that they are based on the Lemania 5100, in which case the attached may be of help.

 

Although the use of plastics for movement components doesn't seem quite right in the traditional sense it is something that Tissot in particular pioneered in their cal.2250 in the 1970's, and swatch have gone back to in the ETA C10.111 as used in their Sistem 51 series of watches. Personally I don't like them but then I guess if it works.......

 

 

1283_Omega1045.pdf

5188_Lemania5100_Technical Instructions_Smaller.pdf

Edited March 4, 2016 by Marc

[Geo]

This is not great, but may help.

[steven]

Thank you, Marc and Geo for the valuable documents in need. I'll go through the documents before continue disassembly. Hopefully rust did not destroy any parts.

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[Geo]

Hopefully rust did not destroy any parts.

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The plastic should be just fine. :D

[bobm12]

 

The plastic should be just fine.

...but cross your fingers, some of those become brittle!  :(

[StuartBaker104]

Boley has a service manual here http://imgs.boley.de/dbfile.ashx/269131a9e7ce4444927bdfe62c698b4f/down/assembly-drawing-eta-c01-211

Note special lubricant on pallet ends (moebius TH7) and pivot. I would avoid using any other oils on the plastic parts because they may damage the plastic.

S

[Geo]

I would think it will be some form of silicone lubricant used on the pallets.

[StuartBaker104]

Yes Geo, good call, I had a quick search for moebius TH7 and I couldn't track it down anywhere. Hopefully this isn't the start of more swatch group restrictions...

S

[steven]

Stuart thank you for the link.

Disassembled the movement and found the chrono cam is badly damaged by water. Funny that it's not even in the components list. Does that mean it's part of the main plate?

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Edited March 5, 2016 by steven

[StuartBaker104]

Looks like it is Steven. Also looks like it is rivetted on, so will be quite a challenge to clean up, but getting parts for this movement will be harder unless you buy a donor watch.

I would be inclined to soak in tea (or Bergeon rust remover if you have no better use for your money) then try and clean with a fine scratch brush to see what you've got.

S

[bobm12]

...and don't forget the miraculous always refreshing CocaCola (I'm short of money so let's see if they pay for this free ad :)  ) It will clean the rust away!

 

Cheers,

 

Bob

 

PS. I would recommend also toothpaste but Colgate doesn't like me! :)

 

PS. Joking apart, both methods have been used successfully by some forum members and are recommended...where applicable of course.