Cal. 503 - Secure Winding Stem & Crown

blkrush · Dec 8, 2023

Does anyone have any experience on the Cal. 503 with the winding stem coming loose? Which part secures the winding stem through the keyless works?

On my Cal 503 a simple counterclockwise motion will allow me to remove the winding stem, and I’m unsure if that’s to be expected.

DON · Dec 8, 2023

In the image. Button near the stem. Lightly press down a tiny bit and slide the stem in. The button is part of the setting lever which has a small arm on the underside which hooks into the winding stem

blkrush · Dec 8, 2023

DON
In the image. Button near the stem. Lightly press down a tiny bit and slide the stem in. The button is part of the setting lever which has a small arm on the underside which hooks into the winding stem

Interesting. So I wonder if a part is worn out on mine, because I can pretty easily remove the stem without pressing the button.

X350 XJR · Dec 9, 2023

Could be a worn stem or set-lever or possibly both, might also be an issue with the set-lever spring.

blkrush · Dec 9, 2023

X350 XJR
Could be a worn stem or set-lever or possibly both, might also be an issue with the set-lever spring.

Thank you! Will check both.

https://www.ebay.com/itm/1549582632...tSIAjn4QUa&var=&widget_ver=artemis&media=COPY

Cal. 503 - Secure Winding Stem & Crown

blkrush

DON

blkrush

X350 XJR

blkrush

Similar threads

198.029 Skin Diver 300Hz Stem/Crown Question

Omega winding stem?

1332 Stem/Crown Replacement

[REDUCED] 1959 Omega Seamaster Calendar Ref. 2849 Cal. 503 - Serviced -$475

Polerouter winding stem help!

Longines cal. 340/345 winding stem