omega case-back

[rattandsonwatchmakers]

I have an omega triple date repair....the issue is that the month wheel is jammed and will not advance....if the date is advanced via one click of the crown it will stop at 31..the only way at this point to advance it to 01 is via the crown while setting the time...now the issue I am having at time with...getting the pressure ring case back off...for some reason on older pieces I have not had an issue...on this one yes!..any advice on how to remove it would be most welcome...there is no where on the  case back indicating where to insert a case knife....my horotec case back remover was no help in this situation either...thanks...

[clockboy]

The Omega's I have repaired/serviced are screw on backs. It's difficult to be sure with your pic. What is this mark is it one of a few notches or just a single notch. A new one for me if it is.

[Chopin]

I think it's a notch and that it has the others. I think that I can see them in the pic.

Never seen such an omega with a snap off case back so it most likely has as screw in one.

[rattandsonwatchmakers]

that is a reflection from taking the photograph..it is smooth all the way around....I considered a screw case-back...no notches to fit a tool I tried Bergeon suction grips attached to my case back remover...did not budge.....I am at a loss....

[jdm]

1 hour ago, rattandsonwatchmakers said:

it is smooth all the way around....I considered a screw case-back...no notches to fit a tool I tried Bergeon suction grips attached to my case back remover...did not budge.....I am at a loss....

There is no screw back without notches or ridges. Surprising that Omega made a snap back for this type, it has to be removed like that.

[JohnR725]

What's interesting from the picture is notice how the Words on the back the case exactly line up top to bottom? Usually With screw on back's it's really hard to get them in exact position. Then I had the thought that perhaps this is not legit except? So googling gives a different answer I've looked at three identical cases as far as the back lining up the words etc. So as it appears to be a legitimate Omega case I'll ask the other watchmaker at work he specializes in Omega's.

[rattandsonwatchmakers]

that is an excellent point about the back lining up....thanks for taking the time to ask the omega watchmaker about this troubling job....

[anilv]

Well Omega used snap backs on the speedmaster , problably because they knew a chrono wouldn't have much water resistance anyway! 

Anilv 

[JohnR725]

So I showed him the pictures of your case and it's a pop off back. He said you look carefully there should be a place to put a knife in. 

[rattandsonwatchmakers]

sorry it took so long to get back...thank you so much for excellent foot work and advice...I'm off and running...