LeCoultre Memovox K815

[markr]

I found this at a yard sale out of the case with hands and dial already removed and some lose bits.  I was able to find where the parts go but I'm missing a bridge screw and at least one gear.  Does anyone have a tech sheet for this?  How about a good spot to locate parts?  Any general advice?  The movement itself is running well  -9 seconds 240 degrees  0.4 error.

[markr]

Can anyone tell me what gear is missing?

[HSL]

The tech sheet for this movement isn't very good but maybe with some imagination one could find out the missing part.

JLC 815.pdf
 

[HSL]

Her is what I see obviously is missing. All from the alarm function.

7294 - Alarm setting connection wheel
7292 - Alarm intermediate unlocking wheel
7305 - Coupling yoke for alarm setting

Maybe someone else can spot some more.

[markr]

BIG BIG thanks HLS.  Because of your help I was able to find all three pieces on eBay for a total w/shipping of $146.50.  I still need to find a gold second hand but I found a silver one that I could try to gold plate if a gold one doesn't pop up. Now if I can figure out where the new parts go I'll be all set.  If anyone sees any other parts I'm missing or has any advice please let me know. Thanks.

[HSL]

That was a fast move ordering the parts. The ones I mentioned is put in these places. 
I was trying to pull out some memories out from my head about the wheel which is in the place where the coupling yoke goes (7305), can't remeber it was two pinions on that one, can it be so that the upper part goes of and that one is actually 7294 put on top of the intermediate wheel?


 

[HSL]

After a nice dinner and a short snooze, I think the mojo came back.
The part that I previously suspected was in the wrong place, probably are. One can’t really see it from the picture but I don’t think the unlocking wheel bridge (7151) goes on with a setup like this, that part will poke up to much. The bridge should keep the wheels in place nice and flat. 

So, if you pick the pinion off the position where the ring is in the picture you should have an intermediate wheel left in place underneath it. There is a small hole in the pin holding the wheel in place.
The slot milled beside the wheel houses the pointy spring part on the 7305. The smaller of the holes on the 7305 goes in the same place as the intermediate wheel so you have to lift that away when installing the 7305. When the 7305 is in place you put the wheel back.
The 7292 is put in the hole with the flange on the 7305. To finish everything up you place the unlocking wheel bridge (7151) on the whole wheel train. The pointy part on the 7151 should point towards the winding stem. The 7151 is then screwed in place by three screws where off one goes into the hole where the 7294 now is placed.

[Nucejoe]

@HSL Couple of more snooze and this snooze alarm will actually ring.

@markr will you take pictures as you go, how you finally reassemble this with success is a valuable walkthrough. 

Good luck.

 

[markr]

That all makes perfect sense.  I can't wait to get the parts in and try it.  Thanks all I will keep you posted when parts arrive.

[HSL]

I knew in the back off my head I had a service sheet for this and on my old NAS I found this.

JLC 815_HSL Edition.pdf

Seems my memory served me well  
 

[markr]

Well as soon as parts came in I had to move so project was put on hold but now I'm wearing my Memovox.  I still need to find a second hand.  Thanks for all your help.  I could not have done it without you.

[HSL]

It turned out beautiful, nice work so far.

[Tudor]

Great project! 
 

Id very much like to have one of these old alarm watches. This, the omega or another. Great job getting it going. 
 

If you check the pinion size you can probably find a generic gold hand the right size, or slightly off, to be broached, or closed in a pin vice, to fit perfectly. 

[markr]

Thanks.  I found a second hand on eBay.  It's on it's way.  I also have a gold cricket in my large pile of to do stuff.