Cannot insert crown release screw into keyless works

[DoctoralHermit]

Hello again watchmakers! First of all, I want to thank you so much for all your help so far... I've come quite a ways in my quest to service my Mockba manual-winding wristwatch made at the First Moscow Watch Factory in the 1950s. Your guidance has been invaluable!

 

The crown releases with a screw that is just next to where the crown inserts. You can see in the first picture below that I've placed this crown release screw in its place. However, I'm not able to screw it into anything... I think it's supposed to screw into the eyelet of the little metal plate in the keyless works (see the second picture). That tiny metal plate slides around between the others a bit... is the trick to find the right positioning, or is it something else?

 

Please let me know if you have any advice on what to do from here! I really don't want to fail, after having made it this far. Thank you!

Edited August 6, 2019 by DoctoralHermit

[Nucejoe]

Close up is needed. Is the screw sticking out the barrel bridge? Should be flush level with the bidge. The screw may need to have been installed before the bridge is screwed to the mainplate. 

If you will, show the screw or vivid close up of the pic one.

[DoctoralHermit]

1 hour ago, Nucejoe said:

Close up is needed. Is the screw sticking out the barrel bridge? Should be flush level with the bidge. The screw may need to have been installed before the bridge is screwed to the mainplate. 

If you will, show the screw or vivid close up of the pic one.

Upon reflection, I think you might be right here. The screw has a protrusion towards the screwdriver-end of it (visible when highly zoomed in to the picture below)... perhaps this is what should be secured down by the bridge. Within the next day, I'll try to insert the screw before installing the bridge, and let you know how it goes!

[watchweasol]

Hi  I should say Nucejoe is right there,  screw  in first then the plate also in the second pic the silver lever I think should be in the groouve in the castle wheel so as when the stem is pulled out the castle wheel slides to engage and disengage.

[DoctoralHermit]

11 hours ago, watchweasol said:

Hi  I should say Nucejoe is right there,  screw  in first then the plate also in the second pic the silver lever I think should be in the groouve in the castle wheel so as when the stem is pulled out the castle wheel slides to engage and disengage.

I just tried this... you are correct! I needed to put the screw in place and then secure the bridge atop it. The other thing I had to do was to apply pressure to that tiny steel plate, so that its threading could catch that of the crown release screw.