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00pumpkin · 22 November 2012, 01:01 AM

So I pulled my GMT out to wind it up and when I tried to screw the crown back down it was only going in 75% of the way.

I’m always careful not to cross the threads so I didn’t want to force it any further. I unscrewed it and tried again, same thing happened.

You can see from the picture that the crown looked like it was hitting one side. I know the threads are a little dirty so that may have something to do with it?

Well, I tried to pull it out and screw it down again and this time it worked like normal.

Any explanation for this incident? I’m hoping it was a freak thing that only happened once because of some dirty threads.

See the pics and let me know what you think. I held my loupe up to my camera phone.

gr33n · 22 November 2012, 01:06 AM

Do not worry, it sometimes doesn't unscrew totally.
For the non-centered crown, I do not know: if it touches the crown guard, go to your AD...

Foxer55 · 22 November 2012, 01:09 AM

This happened to my GMT Pepsi immediately on return from RSC and it went straight back for rebuild. Apparently there is a set screw that holds the stem in place and if loose means the stem will come right out. I would suspect, therefore, that in you case that set screwed is, well, screwed-up.

BTW, where'd you get your GMT Pepsi?

bridgs · 22 November 2012, 01:18 AM

Sorry that happened. Cool thing you did with the loupe and camera phone though.

joe100 · 22 November 2012, 02:38 AM

Are you sure the threads seated properly when you screwed it in. I always back up the crown until I feel them bed in and then screw it down

00pumpkin · 22 November 2012, 04:38 AM

Yeah, I do the same thing. I have since unscrewed and screwed it back in a few times without issue. I hope it was just one of those things...

mjclark32 · 22 November 2012, 04:40 AM

That would scare me too

Beelzy · 22 November 2012, 07:22 AM

I have had that issue with a GMT I had. It was a new watch and it only happened a couple
of times. I could not see anything stripped or out of place, so I dismissed it.

I think it is a thing with Twin-lock crowns, as I never had this phenom with a watch with
a Trip-lock crown.

Andad · 22 November 2012, 04:45 PM

That insert thread does not look worn or damaged and if the insert thread is ok then the crown thread should be ok.
I would give it a wash out with hand sprayer, blow it dry and apply a little lubricant. A touch of vaseline or silicone grease works for me.
No smart remarks thank you.

22 November 2012, 01:01 AM	#1
00pumpkin "TRF" Member Join Date: Aug 2009 Real Name: Dustin Location: USA Posts: 1,980	Had a little scare! So I pulled my GMT out to wind it up and when I tried to screw the crown back down it was only going in 75% of the way. I’m always careful not to cross the threads so I didn’t want to force it any further. I unscrewed it and tried again, same thing happened. You can see from the picture that the crown looked like it was hitting one side. I know the threads are a little dirty so that may have something to do with it? Well, I tried to pull it out and screw it down again and this time it worked like normal. Any explanation for this incident? I’m hoping it was a freak thing that only happened once because of some dirty threads. See the pics and let me know what you think. I held my loupe up to my camera phone. Attached Images

22 November 2012, 01:06 AM	#2
gr33n "TRF" Member Join Date: Sep 2012 Real Name: Xavier Location: Switzerland Watch: 116600 Posts: 446	Do not worry, it sometimes doesn't unscrew totally. For the non-centered crown, I do not know: if it touches the crown guard, go to your AD... __________________ Liberty

22 November 2012, 02:38 AM	#5
joe100 2024 SubLV41 Pledge Member Join Date: Nov 2007 Real Name: Joe Location: New Mexico Watch: Explorer Posts: 12,840	Are you sure the threads seated properly when you screwed it in. I always back up the crown until I feel them bed in and then screw it down __________________ It's Espresso, not Expresso. Coffee is not a train in Italy. -TRF Member 6982-

22 November 2012, 04:40 AM	#7
mjclark32 "TRF" Member Join Date: Mar 2010 Real Name: MJC Location: PHL USA Watch: IWC, Rolex, AP Posts: 29,232	That would scare me too __________________

22 November 2012, 04:45 PM	#9
Andad 2024 SubLV41 Pledge Member Join Date: Nov 2006 Real Name: Eddie Location: Australia Watch: A few. Posts: 37,526	That insert thread does not look worn or damaged and if the insert thread is ok then the crown thread should be ok. I would give it a wash out with hand sprayer, blow it dry and apply a little lubricant. A touch of vaseline or silicone grease works for me. No smart remarks thank you. __________________ E

22 November 2012, 01:09 AM	#3
Foxer55 Banned Join Date: Aug 2009 Location: Wash, DC Posts: 58	This happened to my GMT Pepsi immediately on return from RSC and it went straight back for rebuild. Apparently there is a set screw that holds the stem in place and if loose means the stem will come right out. I would suspect, therefore, that in you case that set screwed is, well, screwed-up. BTW, where'd you get your GMT Pepsi?

22 November 2012, 01:18 AM	#4
bridgs "TRF" Member Join Date: Oct 2012 Real Name: Shane Location: Minnesota Watch: Rolex Submariner Posts: 1,125	Sorry that happened. Cool thing you did with the loupe and camera phone though.

22 November 2012, 04:38 AM	#6
00pumpkin "TRF" Member Join Date: Aug 2009 Real Name: Dustin Location: USA Posts: 1,980	Yeah, I do the same thing. I have since unscrewed and screwed it back in a few times without issue. I hope it was just one of those things...

22 November 2012, 07:22 AM	#8
Beelzy "TRF" Member Join Date: May 2010 Real Name: Chris Location: Cen-Cal Watch: 16610 Posts: 869	I have had that issue with a GMT I had. It was a new watch and it only happened a couple of times. I could not see anything stripped or out of place, so I dismissed it. I think it is a thing with Twin-lock crowns, as I never had this phenom with a watch with a Trip-lock crown.

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