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Problems with omega 1108 based on ETA 2892

Kargol
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Hi guys,
Do you have encountered problems with the automatic winding in the above stated movement? I wonder if it’s made by factory to break after a few years , because I have two watches with the same problem. Does anybody where exactly the problem is?
I wind the watch with the crown and it keeps great time and also has a power reserve over 40 hours. However when I wear it it stops with no reason. Also when I wake up in the morning I find the watch that has stopped during the night even if I was wearing it during all previous day.
is there a problem with the discs of the automatic you think or with the rotor that doesn’t turn well? Do I need to replace sth specifically? Anyone heard of this problem before?

thanks for your replies
 
Kargol
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SkunkPrince SkunkPrince
When were these watches last serviced?
Believe it or not they were serviced just a few days before I got them! I also got the photos of the disassembling and proof of service. However they didn’t check the auto mechanism I guess...
 
SkunkPrince
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Kargol Kargol
Believe it or not they were serviced just a few days before I got them! I also got the photos of the disassembling and proof of service. However they didn’t check the auto mechanism I guess...

If you have the receipts, see if they'll honor the service warranty. If these aren't autowinding, they did something wrong.
 
Kargol
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SkunkPrince SkunkPrince
If you have the receipts, see if they'll honor the service warranty. If these aren't autowinding, they did something wrong.
I would rather know if there is a specific issue with this kind of movement rather than claiming warranty . I don’t want to return them back to another continent risking paying customs taxes again .
 
SkunkPrince
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Kargol Kargol
I would rather know if there is a specific issue with this kind of movement rather than claiming warranty . I don’t want to return them back to another continent risking paying customs taxes again .

Oh that does complicate things. The resident watchmakers will weigh in soon, then. Where are you located?
 
Kargol
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SkunkPrince SkunkPrince
Oh that does complicate things. The resident watchmakers will weigh in soon, then. Where are you located?
Crete in Greece.
 
Kargol
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SkunkPrince SkunkPrince
I'm in USA so I can't recommend anywhere to go. Good luck!
Thanks for trying to help anyway my friend
 
Canuck
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Arrange with the source you bought the watches from to reimburse you for the cost of having a shop local to you that you trust, go through them. You say they stop for no reason. There must be a reason for the watches to stop!
 
Archer
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There’s nothing about these movements that is inherently faulty in a way that would cause lack of winding efficiency. If serviced properly, there should not be any problems.

In the last service, did they replace the reversing wheel? The rotor bearing?

These are two areas that need to be paid attention to. ETA and Omega no longer recommend cleaning and using the reversing wheels over again...they recommend replacement at every service.

For the rotor the bearing must pass the damping test and not have excessive play.

Cheers, Al
 
Kargol
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Archer Archer
There’s nothing about these movements that is inherently faulty in a way that would cause lack of winding efficiency. If serviced properly, there should not be any problems.

In the last service, did they replace the reversing wheel? The rotor bearing?

These are two areas that need to be paid attention to. ETA and Omega no longer recommend cleaning and using the reversing wheels over again...they recommend replacement at every service.

For the rotor the bearing must pass the damping test and not have excessive play.

Cheers, Al
He said that he replaced the whole automatic mechanism but I guess he didn't replace the rotor bearing since he used the same Omega rotor... So I guess the rotor bearing is the problem...

Thank you @Archer !! this is really useful!!
Now the problem is to find this rotor bearing!! 🤦
 
robocaspar
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Kargol Kargol
He said that he replaced the whole automatic mechanism but I guess he didn't replace the rotor bearing since he used the same Omega rotor... So I guess the rotor bearing is the problem...

Thank you @Archer !! this is really useful!!
Now the problem is to find this rotor bearing!! 🤦

The rotor bearing is located in the center of the rotor and is held by a friction clip. You don't have to change the whole rotor..
 
Archer
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Kargol Kargol
He said that he replaced the whole automatic mechanism but I guess he didn't replace the rotor bearing since he used the same Omega rotor... So I guess the rotor bearing is the problem...

Thank you @Archer !! this is really useful!!
Now the problem is to find this rotor bearing!! 🤦

First thing I would do is ask if they replaced the bearing. If they returned the replaced parts (they should have) then you would know just by looking at the parts you got back.

The 1108 uses a standard ETA 2892A2 rotor bearing, so it should be easy to find one. The 1120 and newer is where the bearing is a completely different animal from the ETA versions of the movement.
 
Kargol
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Archer Archer
First thing I would do is ask if they replaced the bearing. If they returned the replaced parts (they should have) then you would know just by looking at the parts you got back.

The 1108 uses a standard ETA 2892A2 rotor bearing, so it should be easy to find one. The 1120 and newer is where the bearing is a completely different animal from the ETA versions of the movement.
It’s really amazing the help you provide to all OF forum members!! Thank you !!!
 
F
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Kargol Kargol
Crete in Greece.
Hi Kargol,

Did you manage to figure out how to fix this? I have an Omega 1108, and I'm experiencing the same issue.

As you mentioned, if I wind the watch manually using the crown, it keeps great time. However, once I wear it, it stops working. This problem occurred two years ago, and I sent the watch for repair, which cost me £300. After that, it worked fine, but just a couple of days ago, the same issue started again.

I'm pretty sure the problem is with the oscillating weight coming loose—I can hear it.

I tried opening the watch to fix it myself, but I don’t have the right tools for the job. Does anyone know the proper tools needed to secure the oscillating weight back in place?


1727606763292.png

Thanks
 
Canuck
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Several years ago, I encountered a Breitling that used this movement. It had quit running. There is not much room between the under side of the automatic wind system and the train wheels in the watch movement itself. There are three tiny screws on the under side of the automatic wind system that hold the rotor bearing. You can see the tips of these three screws peeking out on the top of the bearing hub. If one of these screws was not securely tightened when the watch was serviced, chances are one (or more) of these screws may have loosened, backed out of place, and is now dragging on the fourth wheel in the gear train. Solving such a problem is not a task for someone with no tools or experience.
 
Archer
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F Farzad
Hi Kargol,

Did you manage to figure out how to fix this? I have an Omega 1108, and I'm experiencing the same issue.

As you mentioned, if I wind the watch manually using the crown, it keeps great time. However, once I wear it, it stops working. This problem occurred two years ago, and I sent the watch for repair, which cost me £300. After that, it worked fine, but just a couple of days ago, the same issue started again.

I'm pretty sure the problem is with the oscillating weight coming loose—I can hear it.

I tried opening the watch to fix it myself, but I don’t have the right tools for the job. Does anyone know the proper tools needed to secure the oscillating weight back in place?


1727606763292.png

Thanks
Very unlikely to be a situation where the rotor is coming loose, since there are 3 screws holding it in place. It's more likely a worn bearing or some other issue.

To do anything with the rotor, the entire automatic winding system has to be removed, and that bridge holds the stop lever (what hacks the movement when you put it in time setting mode) down, so if you remove that bridge, keep an eye on that lever, or it will fall into the movement and cause you more issues. You also have to be careful when you put the automatic winding system back on, to make sure the stop lever is positioned correctly and doesn't get jostled out of place when you put the bridge back on.

Not really a job you want to tackle unless you already have some watchmaking experience.
 
F
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Archer Archer
Very unlikely to be a situation where the rotor is coming loose, since there are 3 screws holding it in place. It's more likely a worn bearing or some other issue.

To do anything with the rotor, the entire automatic winding system has to be removed, and that bridge holds the stop lever (what hacks the movement when you put it in time setting mode) down, so if you remove that bridge, keep an eye on that lever, or it will fall into the movement and cause you more issues. You also have to be careful when you put the automatic winding system back on, to make sure the stop lever is positioned correctly and doesn't get jostled out of place when you put the bridge back on.

Not really a job you want to tackle unless you already have some watchmaking experience.
Hi Archer,

Indeed, this isn’t a job for me—I must admit I didn’t understand most of your technical explanation! That said, I really wish I had the chance to learn how to fix automatic watches at some point. The old technologies behind mechanical watches are truly fascinating to me.

I enjoy watching YouTube videos of people restoring old watches, and I hope I’ll get to try it myself one day.

For now, though, I think it’s best left to the professionals. Do you have any recommendations for where I could get my Omega repaired in the UK?

Thanks
 
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