Omega Split stem issue (will not go back in)

[oli]

Hi all

I have an interesting one here...

Working on an Omega Calibre 565, the watch is a front loader with monocoque case,  no case back, hence the split stem.

I extracted the split stem, with no issue as I have done many times before, serviced the movement, but now cannot fit the stem back in without pressing the little pusher / detent on on the upper side (which obviously is not accessible when the watch is cased!).

I have noticed the split stem which was in the watch does not have an angle/ bevel to help the setting lever slide over the shoulder into its groove. 

 

Other Split stems I have come across have a bevel, so it is easy to just slide the stem back in. Eg. below of another split stem, taken from an ETA 2750:

 

I thought I simply had the wrong part, but it begs the questions:

- how did the previous watchmaker who worked on this watch fit the stem?

- I have googled Omega split stems, and it seems some do not have the bevel, so I may well have the correct part?

 

Am I missing something? How can I put this back in?

 

I would welcome any advice!

 

[oldhippy]

Try a little grease on the beak of the stem where it snaps on. Sometimes dirt can get packed hard in the button preventing the button to fix flush against the case causing it to not make contact.  Try another stem if you have one in stock.

[jdm]

Surprised by this question, you do the inverse steps as for removing.

Fit the inner stem part with mov.t removed.
Fit mov.t in case.
Fit outer stem / crown.

[vinn3]

Quote

 

"the two piece stem"   the part that goes into the movment  must be set first and tested ( winding and move the hands)  then put it in the case. vin

[oldhippy]

19 minutes ago, jdm said:

Surprised by this question, you do the inverse steps as for removing.

Fit the inner stem part with mov.t removed.
Fit mov.t in case.
Fit outer stem / crown.

Do you think he is trying to fit the whole stem and just attach the button part. If so my answer is very wrong.

[oli]

Hi all thank you very much for your responses.

Clearly I was missing something here, very sorry if this sounded like a stupid question... It all makes sense now.

I was trying to insert the whole stem (male + female assembly + crown) with the movement in the case - it works when there is a "bevel" on the stem. I have never "clipped" the female part on the male part with the movement in the case before, I did not realise you could do that, a bit silly of me really.

Thank you!

[frenchie]

There are no stupid questions, we are all here to learn