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Jazz · 24 March 2008, 10:29 AM

Serious question, folks.

When you screw down the crown, how far do you go.

I have been screwing (turning) my crown down until I can't go any further in a soft, gently way, and then I give it one final little tight twist until it's nice and very tight.

Is this ok.

Timing is WELL within COSC, etcetera, with no side effects.

Is there a guide for this kind of thing, as I am a 'newish' Rolex lover.

TIA

-=JAZZ=-

mdx77 · 24 March 2008, 10:35 AM

Wow.....this is going to go down hill quicker than you can say Baaaaaa.......

Seriously, this has come up a lot, but only losely twist until it stops. Any more and you can prematurely damage the seals.

jasonbellevue · 24 March 2008, 10:36 AM

First there was licking now it's screwing...

There is no need for that "final little tight twist" to make it "very" tight. Screw in the crown until it offers little resistance, that should do it.

mdx77 · 24 March 2008, 10:37 AM

Quote:

Originally Posted by jasonbellevue

First there was licking now it's screwing...

I think there was a little rubbing in there somewhere too........

frostie · 24 March 2008, 10:37 AM

Quote:

Originally Posted by jasonbellevue

First there was licking now it's screwing...

Jazz · 24 March 2008, 10:44 AM

I have been turning the crown down very tightly.

Therefore, 'screw' it down until it offers no more resistance at all, and my Rolex will be 100% waterproof???

mdx77 · 24 March 2008, 10:45 AM

Quote:

Originally Posted by Jazz

I have been turning the bezel down very tightly.

Therefore, 'screw' it down until it offers no more resistance at all, and my Rolex will be 100% waterproof???

Noooooooooo, don't do that! Your watch is already waterproof without screwing in the crown.

Jazz · 24 March 2008, 10:49 AM

Quote:

Originally Posted by mdx77

Noooooooooo, don't do that! Your watch is already waterproof without screwing in the crown.

I was sunder the assumption that my baby (sig) would not be waterproof unless the crown was screwed down 'hard', so to speak.

Now I'm confused.

Jazz · 24 March 2008, 10:50 AM

Quote:

Originally Posted by jasonbellevue

First there was licking now it's screwing...

There is no need for that "final little tight twist" to make it "very" tight. Screw in the crown until it offers little resistance, that should do it.

Therefore, if I do that from now on, will it be 100% waterproof??

I'm confused!!!

mdx77 · 24 March 2008, 10:54 AM

I picked this info up from JJ but yes to be 100% waterproof you must screw down the crown.....I was refering to screwing it down tight which you don't need to do. The best way I can describe it is just loosely tighten it down, don't over do it. BTW.....trip lock crowns are are already waterproof w/out srewing down the crown.....for some reason I thought you had a gmt IIc......

Triple Black 88 · 24 March 2008, 10:56 AM

I tighten mine till it stops...that's it. I don't try to give it any extra.

So far so good

Jazz · 24 March 2008, 11:07 AM

Thanks guys!!

problmchylde · 24 March 2008, 11:09 AM

This thread got me all excited for nothing....

mdx77 · 24 March 2008, 11:13 AM

Quote:

Originally Posted by problmchylde

This thread got me all excited for nothing....

You sick bastid........here you go.....

ROLEX MAN · 24 March 2008, 11:26 AM

I was all aroused for nothing

Jazz · 24 March 2008, 11:46 AM

Sorry, lads!!!!

Tools · 24 March 2008, 12:28 PM

Your DateJust has a Twin Lock Crown.

The waterprof seal comes from an "O" ring inside the tube that seals around the stem, keeping water out. An additional safeguard is the gasket inside the crown that acts like the lid on a mason jar (hence, Twin locks). It does not need to be too tight or you run the risk of deforming it, or worse yet, tearing or shredding it and making it useless

The crown should be screwed down snugly, but not overly tight..

mdx77 · 24 March 2008, 12:30 PM

Thanks Larry.....I was trying to look for that earlier but I have so many pic's now......I really need to get organized!!!

daunwaun · 24 March 2008, 12:47 PM

I tighten it till it feels tight enough, basically until I cant tighten it anymore.

robfxlr · 24 March 2008, 01:02 PM

I was under the impression that the watch was waterproof even without the crown screwed in, for approx 50 feet.

Come to think of it, I may be confusing it with my SS Daytona, and the other push buttons............

sherwin · 24 March 2008, 01:34 PM

just do it gently and do not overtighten. it doesnt serve any additional purpose if you screw it any tighter

Jazz · 24 March 2008, 05:29 PM

Thank you all for your replies.

SPACE-DWELLER · 24 March 2008, 05:38 PM

This is one of the rare occasions where it is recommended to screw it up.

TARDIS · 24 March 2008, 05:41 PM

Do Not Use Pliers

sbakar · 24 March 2008, 06:29 PM

The compression O-ring would need only a very light snugging down to be fully effective. As others have said, any more and you will screw up the O-ring prematurely. Having said that, my dad has given his crown an extra tightening on his DJ for the last 20 years and it still works great. Just try not to apply pliers to it and you should be fine

This reminds me of the plastic drain bolt on my BMW's radiator. The sealing O-ring is on the BODY of the bolt and seals on a taper. It had already fully sealed even before the head of the bolt touches the radiator. The torque on this bolt is given in INCH-pounds. If you tighten any more than enough to make the head and radiator JUST kiss each other, you will break the plastic bolt...ask me how I know.

That's a great picture of the Twinlock crown...does anyone have one of the Triplock crown, too? It would be great to see all the seals in cross-section. Thanks for posting!

SNB

shoppy · 24 March 2008, 06:35 PM

I screw finger tight then ease it of a qtr turn.

Tools · 25 March 2008, 02:59 AM

Here's how the Triplock works..

This is a late model, early Triplocks do not have the Crown to Tube O ring.

sheldonsmith · 30 March 2008, 10:23 AM

Interesting.... I know that when I have my watches pressure tested, I find the watches coming back with the crown wound tighter than when I submitted the watch for testing. I have noticed this at both my Watchmaker, and at Rolex RSC in Beverly Hills.... Hmmmm..

Great images in this thread. Thanks!

-Sheldon

24 March 2008, 10:29 AM	#1
Jazz "TRF" Member Join Date: Feb 2008 Real Name: Raymond Location: London, UK Watch: Sub Date 116610LN Posts: 686	Screwing Serious question, folks. When you screw down the crown, how far do you go. I have been screwing (turning) my crown down until I can't go any further in a soft, gently way, and then I give it one final little tight twist until it's nice and very tight. Is this ok. Timing is WELL within COSC, etcetera, with no side effects. Is there a guide for this kind of thing, as I am a 'newish' Rolex lover. TIA -=JAZZ=- __________________ Rolex OP 116300 Datejust II - Random Rolex OP 116610LN Sub C - V series Rolex OP 116200 SS DateJust Z series - lost/stolen Rolex OP 16613 TT 'Bluesy' M series Rolex OP 16600 SS Sea-Dweller M series Rolex OP 116523 TT Cosmograph Daytona Z series Rolex OP 16610 SS Submariner Date Z series - lost/stolen Santos de Cartier TT 2004 silver dial (Limited Edition)

24 March 2008, 10:35 AM	#2
mdx77 "TRF" Member Join Date: Jan 2008 Real Name: Kurt Location: Philly Burbs!! Posts: 3,296	Wow.....this is going to go down hill quicker than you can say Baaaaaa....... Seriously, this has come up a lot, but only losely twist until it stops. Any more and you can prematurely damage the seals. __________________ “This is your last chance. After this, there is no turning back. You take the BLUE pill - the story ends; you wake up in your bed and believe whatever you want to believe. You take the RED pill - you stay in Wonderland, and I show you how deep the rabbit hole goes.” Rolex Submariner 116610LV Hulk \| Rolex GMT 16710 Pepsi \| Omega Speedmaster “Speedy Tuesday” \| Tudor Black Bay 79220R “ETA Rose” \| Tudor Pelagos Blue Dial \| Rolex Submariner Yellow Gold 116618LB \| Rolex Milgauss “Z-Blue” 116400GV

24 March 2008, 10:36 AM	#3
jasonbellevue "TRF" Member Join Date: Mar 2007 Real Name: Jason Location: at home Posts: 5,098	First there was licking now it's screwing... There is no need for that "final little tight twist" to make it "very" tight. Screw in the crown until it offers little resistance, that should do it. __________________

24 March 2008, 10:44 AM	#6
Jazz "TRF" Member Join Date: Feb 2008 Real Name: Raymond Location: London, UK Watch: Sub Date 116610LN Posts: 686	I have been turning the crown down very tightly. Therefore, 'screw' it down until it offers no more resistance at all, and my Rolex will be 100% waterproof??? __________________ Rolex OP 116300 Datejust II - Random Rolex OP 116610LN Sub C - V series Rolex OP 116200 SS DateJust Z series - lost/stolen Rolex OP 16613 TT 'Bluesy' M series Rolex OP 16600 SS Sea-Dweller M series Rolex OP 116523 TT Cosmograph Daytona Z series Rolex OP 16610 SS Submariner Date Z series - lost/stolen Santos de Cartier TT 2004 silver dial (Limited Edition)

24 March 2008, 10:54 AM	#10
mdx77 "TRF" Member Join Date: Jan 2008 Real Name: Kurt Location: Philly Burbs!! Posts: 3,296	I picked this info up from JJ but yes to be 100% waterproof you must screw down the crown.....I was refering to screwing it down tight which you don't need to do. The best way I can describe it is just loosely tighten it down, don't over do it. BTW.....trip lock crowns are are already waterproof w/out srewing down the crown.....for some reason I thought you had a gmt IIc...... __________________ “This is your last chance. After this, there is no turning back. You take the BLUE pill - the story ends; you wake up in your bed and believe whatever you want to believe. You take the RED pill - you stay in Wonderland, and I show you how deep the rabbit hole goes.” Rolex Submariner 116610LV Hulk \| Rolex GMT 16710 Pepsi \| Omega Speedmaster “Speedy Tuesday” \| Tudor Black Bay 79220R “ETA Rose” \| Tudor Pelagos Blue Dial \| Rolex Submariner Yellow Gold 116618LB \| Rolex Milgauss “Z-Blue” 116400GV

24 March 2008, 10:56 AM	#11
Triple Black 88 "TRF" Member Join Date: Aug 2007 Real Name: Steve Location: Collegeville PA Watch: Day-Date Posts: 752	I tighten mine till it stops...that's it. I don't try to give it any extra. So far so good

24 March 2008, 11:07 AM	#12
Jazz "TRF" Member Join Date: Feb 2008 Real Name: Raymond Location: London, UK Watch: Sub Date 116610LN Posts: 686	Thanks guys!! __________________ Rolex OP 116300 Datejust II - Random Rolex OP 116610LN Sub C - V series Rolex OP 116200 SS DateJust Z series - lost/stolen Rolex OP 16613 TT 'Bluesy' M series Rolex OP 16600 SS Sea-Dweller M series Rolex OP 116523 TT Cosmograph Daytona Z series Rolex OP 16610 SS Submariner Date Z series - lost/stolen Santos de Cartier TT 2004 silver dial (Limited Edition)

24 March 2008, 11:09 AM	#13
problmchylde "TRF" Member Join Date: May 2007 Real Name: PETER Location: Singapore Watch: 1665 SD Posts: 768	This thread got me all excited for nothing....

24 March 2008, 11:26 AM	#15
ROLEX MAN 2024 SubLV41 Pledge Member Join Date: Jan 2008 Real Name: Martin Location: Home and Away Watch: you? "YES PLEASE"! Posts: 3,719	I was all aroused for nothing __________________ *it's not just about telling the time...* *happy rolexing...* I'm just a man with a passion

24 March 2008, 11:46 AM	#16
Jazz "TRF" Member Join Date: Feb 2008 Real Name: Raymond Location: London, UK Watch: Sub Date 116610LN Posts: 686	Sorry, lads!!!! __________________ Rolex OP 116300 Datejust II - Random Rolex OP 116610LN Sub C - V series Rolex OP 116200 SS DateJust Z series - lost/stolen Rolex OP 16613 TT 'Bluesy' M series Rolex OP 16600 SS Sea-Dweller M series Rolex OP 116523 TT Cosmograph Daytona Z series Rolex OP 16610 SS Submariner Date Z series - lost/stolen Santos de Cartier TT 2004 silver dial (Limited Edition)

24 March 2008, 12:28 PM	#17
Tools TRF Moderator & 2024 SubLV41 Patron Join Date: May 2007 Real Name: Larry Location: Mojave Desert Watch: GMT's Posts: 43,514	Your DateJust has a Twin Lock Crown. The waterprof seal comes from an "O" ring inside the tube that seals around the stem, keeping water out. An additional safeguard is the gasket inside the crown that acts like the lid on a mason jar (hence, Twin locks). It does not need to be too tight or you run the risk of deforming it, or worse yet, tearing or shredding it and making it useless The crown should be screwed down snugly, but not overly tight.. __________________ (Chill ... It's just a watch Forum.....) NAWCC Member

24 March 2008, 12:30 PM	#18
mdx77 "TRF" Member Join Date: Jan 2008 Real Name: Kurt Location: Philly Burbs!! Posts: 3,296	Thanks Larry.....I was trying to look for that earlier but I have so many pic's now......I really need to get organized!!! __________________ “This is your last chance. After this, there is no turning back. You take the BLUE pill - the story ends; you wake up in your bed and believe whatever you want to believe. You take the RED pill - you stay in Wonderland, and I show you how deep the rabbit hole goes.” Rolex Submariner 116610LV Hulk \| Rolex GMT 16710 Pepsi \| Omega Speedmaster “Speedy Tuesday” \| Tudor Black Bay 79220R “ETA Rose” \| Tudor Pelagos Blue Dial \| Rolex Submariner Yellow Gold 116618LB \| Rolex Milgauss “Z-Blue” 116400GV

24 March 2008, 12:47 PM	#19
daunwaun "TRF" Member Join Date: Nov 2006 Real Name: Ken Location: toronto Watch: 18K YG Day Date Posts: 2,985	I tighten it till it feels tight enough, basically until I cant tighten it anymore. __________________ DAUNWAUN

24 March 2008, 01:02 PM	#20
robfxlr Member Join Date: Apr 2007 Location: florida Posts: 61	screwing ............... I was under the impression that the watch was waterproof even without the crown screwed in, for approx 50 feet. Come to think of it, I may be confusing it with my SS Daytona, and the other push buttons............

24 March 2008, 01:34 PM	#21
sherwin "TRF" Member Join Date: Nov 2007 Location: Perth/Singapore Posts: 1,764	just do it gently and do not overtighten. it doesnt serve any additional purpose if you screw it any tighter

24 March 2008, 05:29 PM	#22
Jazz "TRF" Member Join Date: Feb 2008 Real Name: Raymond Location: London, UK Watch: Sub Date 116610LN Posts: 686	Thank you all for your replies. __________________ Rolex OP 116300 Datejust II - Random Rolex OP 116610LN Sub C - V series Rolex OP 116200 SS DateJust Z series - lost/stolen Rolex OP 16613 TT 'Bluesy' M series Rolex OP 16600 SS Sea-Dweller M series Rolex OP 116523 TT Cosmograph Daytona Z series Rolex OP 16610 SS Submariner Date Z series - lost/stolen Santos de Cartier TT 2004 silver dial (Limited Edition)

24 March 2008, 05:38 PM	#23
SPACE-DWELLER "TRF" Member Join Date: Apr 2007 Real Name: Bo Location: Denmark Watch: Rolex, of course! Posts: 22,436	This is one of the rare occasions where it is recommended to screw it up. __________________ With kind regards, Bo LocTite 221: The Taming Of The Screw...

24 March 2008, 05:41 PM	#24
TARDIS "TRF" Member Join Date: Sep 2005 Real Name: Steve Location: Queensland, AUST Posts: 2,003	Do Not Use Pliers

24 March 2008, 06:29 PM	#25
sbakar "TRF" Member Join Date: Mar 2008 Location: North Vancouver Posts: 650	The compression O-ring would need only a very light snugging down to be fully effective. As others have said, any more and you will screw up the O-ring prematurely. Having said that, my dad has given his crown an extra tightening on his DJ for the last 20 years and it still works great. Just try not to apply pliers to it and you should be fine This reminds me of the plastic drain bolt on my BMW's radiator. The sealing O-ring is on the BODY of the bolt and seals on a taper. It had already fully sealed even before the head of the bolt touches the radiator. The torque on this bolt is given in INCH-pounds. If you tighten any more than enough to make the head and radiator JUST kiss each other, you will break the plastic bolt...ask me how I know. That's a great picture of the Twinlock crown...does anyone have one of the Triplock crown, too? It would be great to see all the seals in cross-section. Thanks for posting! SNB

24 March 2008, 06:35 PM	#26
shoppy "TRF" Member Join Date: Sep 2007 Real Name: Simon Location: UK Watch: OP and daytona Posts: 1,783	I screw finger tight then ease it of a qtr turn.

25 March 2008, 02:59 AM	#27
Tools TRF Moderator & 2024 SubLV41 Patron Join Date: May 2007 Real Name: Larry Location: Mojave Desert Watch: GMT's Posts: 43,514	Here's how the Triplock works.. This is a late model, early Triplocks do not have the Crown to Tube O ring. __________________ (Chill ... It's just a watch Forum.....) NAWCC Member

30 March 2008, 10:23 AM	#28
sheldonsmith 2024 Pledge Member Join Date: Nov 2005 Location: Member 202♛ Posts: 1,815	Interesting.... I know that when I have my watches pressure tested, I find the watches coming back with the crown wound tighter than when I submitted the watch for testing. I have noticed this at both my Watchmaker, and at Rolex RSC in Beverly Hills.... Hmmmm.. Great images in this thread. Thanks! -Sheldon __________________

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