in order to buy appropriate spares in my attempt to service an Omega 175.0083 (7750) I need some advice:
I've already been suggested to replace MS:
Barrel is Ok and I'm thinking of buying a new MS and moebius 8217 for barrel lubricating as I don't want to spend money on recommended Kluber 125 grease.
Should I consider instead buying a barrel complete (assuming Barrel complete (180.1) comes with MS installed) wich supposedly comes prelubricated ?
Attached image shows automatic device bridge with evident sign of wear from where, to my understanding, the problem orginated: a screw came off
I cant find original part.
ETA part is different from Omega in that the Omega is larger and partially covers hammer two function and the chronograph cam.
Beside that and since the watch has no crystal back case I think those parts are perfectly interchangeable.
Do I need to replace the bridge or are there alternative aproaches to this problem?
A new 7750 movement, cleaning and assembly again, why watch swing only 260 °?
I am servicing my first 7750 (thank you Mark for the YT videos and Lawson for the Disassembly/Assembly walk-through).
The movement is not new - let's say it has an obscure unknown history It appears to be a genuine swiss 7750, but with a lower grade finish (very low...)
When putting back the balance stones I noticed that there were two sizes (two pairs, because the cap stones fit the hole jewel settings). I put the smaller stone and hole-jewel on the mainplate and the larger ones on the balance cock. I tried to but the larger setting on the mainplate but it didn't fit quite right. I believe the springs are the same size - its just the stones that differ a bit (aprox 0.1mm)
So my question is: did any of you stumbled upon the same issue? Is it normal for a 7750 to have two different stone sizes?
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Have adjusted it like that. Also removed the jumper altogether to see if the disc would move more, but it didn't. I measured the diameter of the peg on the driving wheel and it's 0.3mm, is this the correct size?, to me the peg looks a little bit smaller then the other once I see pictured here.
Forgott to add a picture showing the correct height, just make it level with the hour wheel.
It is supposed to be completely flat, no wobble. If it's not flat there is a risk the disk is not just scew but the date ring also is misaligned to the star wheel. The snappy action during date shift will for sure not work in that case. A date jumper is supposed to do what the name applies, keep the dial in place with a small force, just to keep it in place only by friction will make the dial move a slight bit with every small chock the watch gets and I doubt even ROLEX haven't made it work that way, but one never knows ,
Good morning/afternoon/evening/night, all. I've been an enthusiast for a very long time(I'm 65) but have never progressed past the stage of strip and clean. I'll set up my bench and then not touch it for a year or so, but I'm back. I live in Mexico Beach, FL and as most of the area our home was almost destroyed by hurricane Michael last Oct 10th, 2018, but lucky for my lovely wife and me the interior of our home was untouched, so watch bench, tools and my collection were all in great shape. Most of the home repairs are done with a few items remaining that are lower priority, so back to some sort of normal for us. I look forward to reading the forum for tips and knowledge. Regards...