Glycine Airman Hacking spring

[watchfellow]

Hi everyone, 

I am putting together a Glycine Airman SST. This is the model with AS movement and a tiny "hacking" spring/pin on the movement ring that I know is supposed to "pop" through the dial when the stem is pulled out, thereby stopping the seconds hand. Does anyone have any tips, tricks, or general direction on attaching this spring/pin through (around?) the stem and through the dial? How far is the spring supposed to stick out the dial when the stem is pulled in? I'm really not sure as to the exact shape it's supposed to look like upon assembly. Any help is appreciated! I have attached a photo of the spring as it looks now.

[Nucejoe]

What caliber is the movement?     a datasheet and schematic diagram should show this.

[Tudor]

Yes, caliber please. I have some AS sheets in my collection as well.

[WatchMaker]

Some useful pics at https://thewatchbloke.co.uk/2015/12/08/glycine-airman/

[Nucejoe]

11 minutes ago, WatchMaker said:

Some useful pics at https://thewatchbloke.co.uk/2015/12/08/glycine-airman/

This shows an eta movement, OP says his watch houses an AS calib.

We need clear pix and calib.

[watchweasol]

According to Ranfft    The early versions were based on the Felsa 690 to 698/99

the laters ones had ETA 2789 movements   and AS movements but you say yours has an eta it could be its the 2789.  I have attached the the tech sheet for th ETA movement.

ETA 2779, 2789.pdf

[WatchMaker]

2 hours ago, Nucejoe said:

This shows an eta movement, OP says his watch houses an AS calib.

Noted ... I'd taken this to be a general question around this type of Glycine hacking feature, pin sticking out length and so on and was under the impression this was a solution that Glycine retrofitted themselves rather than it being a standard AS, or other manufacturer, hacking feature. I'll look out for further updates with interest!

Edited October 20, 2020 by WatchMaker

[watchfellow]

The movement is AS 1902/1903. I have attached a photo of the movement, one of the stem with the "indent" where the pin is supposed to attach, and one of the dial with the hole at 12 o'clock where the pin should pop out of. 

The gentleman on this link goes into detail about this type of hacking mechanism, but I'm still not sure how the pin should be shaped, ie. how it is supposed to attach to the stem and how much should it protrude out of the dial when hacking is on or off.

https://www.nevadawatchrepair.com/glycine-airman-service.html

[Tudor]

Never dealt with one of these but perhaps the hacking lever is added after the movement is cased up?

[watchweasol]

Attached 1902 and 1903 tech sheets for your interest.

AS 1902.pdf AS 1903, 1913.pdf