7750 service help

[AP1875]

Is this the correct orientation for the chronograph cam? My first go was a fail so just want to check I’ve got everything in the right place before I proceed further

 

 

In one of marks videos he states that he has engaged the cam (given it a slight turn with his tweezers), so he can fit the chronograph runner wheel. I think this is what I’ve done?

 

 

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[AP1875]

(Better resolution)


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[HSL]

Seems to be in place.. On the wrong device to see clearly but will upload a pic which you can compare with..

[watchweasol]

Hi AP  there is a service document on cousins uk site I have loaded the pdf exploded diagram might be of some assistance for you

1075_ValJoux 7750 Pages 8-13.pdf

[AP1875]

On 4/4/2019 at 8:35 PM, HSL said:

Seems to be in place.. On the wrong device to see clearly but will upload a pic which you can compare with..

Thanks alot, as far as I can see I'm good to progress further.

 

[AP1875]

On 4/4/2019 at 8:53 PM, watchweasol said:

Hi AP  there is a service document on cousins uk site I have loaded the pdf exploded diagram might be of some assistance for you

1075_ValJoux 7750 Pages 8-13.pdf 4.65 MB · 2 downloads

Thanks for the help, I do have those diagrams from eta. The cam orientation is totally different from the videos I've seen and also Lawsons tutorial, so not sure if it actually works in the position the diagram, which is odd.

[HSL]

The 7750 is quite straight forward to work with I add some pics which shows you what to look for and help you in the progress..

Good luck and keep up the good work!

[AP1875]

You've confirmed a couple of things with those pictures, so thanks for taking the time to do this. Fingers crossed i'm going to get a chance to assemble it tomorrow, hopefully I can post a video of it working 

[AP1875]

I noticed the clutch where it holds the oscillating pinion looks slightly raised, is this how it should be or is it bent?



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[HSL]

The clutch should be straight and lying flat onto the movement, there is a small chamfer on the top and recess for the hammer..

[AP1875]

I'm going to order a replacement.

does this sound like the correct description for the part? Cousins numbers mean nothing to me, I don't know why they don't just reference the number on the ETA Tech sheet...