Hi all together,
I bought a vintage Omega 166.064 with cal 752.
Trying to set the correct time, I realized that by moving the crown I can also move the movement together with the dial.
Opening the watch, I could not really identify what is missing to hold the movement in place.
Can you help me with this?
Best and thanks for your advice

 

It looks like the case clamp at the narrow end of the auto wonder bridge is installed incorrectly and possibly bent as well.

 

I am seeing this by mobile phone so pics are not much to my help. These watches have a rubber dampening/cushoning system. It is either missing or faulty. I believe there is supposed to be three rubber bits.

 

I guess you mean theses clamps/screws (sorry for being a complete newbie on watch repair). They appear correct to me, screws are tight, clamps are tightened in the gap. Actually the outer ring also moves together with the movement.

 

Indeed, there is rubber around the outer part. It is about 5-6 pieces not forming a complete ring. About a sixth of the diameter is free

 

I have one of these and I feel its an odd setup. The movement is held to the center ring using the case clamps, the center ring is located using the rubber pieces around the outside - this so far looks like yours is correct. However there should be a flat spring inside the case back, so when you tighten the case back the spring presses against the center ring and holds everything tight. It appears you are missing this spring?

 

It seems so, there is no spring in the caseback, only the ridge with the winding on the outer side. What would this sping look like? A ring?

 

This is the spring from a 166.041 but they look the same. I tried to find one for my 166.065 but I couldnt find one but i think the 166.041 one is the same size

 

This spring is definitely missing. I will try to find one as well and will let you know when I spotted a source.

 

Thanks to all of you for your help!

 

This is indeed a pure horror to get this spring. There is only one case back on ebay which seems to have the spring still available. Anyone with a good idea what to use instead or where to buy one of these springs?

 

Have seen some 750's movements with an enlargement ring, perhaps your case needs one and is missing it?

 

Thanks for this. I found a spring ring for a slightly larger caliber. I cut a piece out and put it in and it holds the movement tight now. Still looking for the right size one to replace the tweaked one, but for the time being I can wear it ;-)