good rolex threads on cronw 1 2 turn forum | With screwdown crowns how does back good rolex threads on cronw 1 2 turn forum my very old 1967 date adjust rolex crown is very hard to turn need help Vintage Rolex Discussion $109.49
0 · With screwdown crowns how does back
1 · Omega, Rolex, others: what’s your screw
2 · Gritty thread on crown question
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I've had my 30 year old Sub service five times and each time I needed a new crown because between the service intervals, I stretched the threads on the crown, compounded with grit . If you just start screwing the crown down without doing this, there's a chance that you could cross thread the crown and case tube. This results in damage to both threads, and to resolve it both the case tube and crown are .
Works like a charm on any screw down crown style watch and preserves the threads. We even mark the unsigned crowns on Seiko divers so we can do the same via clock .I've had my 30 year old Sub service five times and each time I needed a new crown because between the service intervals, I stretched the threads on the crown, compounded with grit every time I opened the crown to wind or set the date. my very old 1967 date adjust rolex crown is very hard to turn need help Vintage Rolex Discussion
Less than one turn to screw and unscrew crown? Vintage Rolex Discussion If you just start screwing the crown down without doing this, there's a chance that you could cross thread the crown and case tube. This results in damage to both threads, and to resolve it both the case tube and crown are typically changed. Here is what a good internally threaded case tube looks like:
It is possible the first threads on either the crown or tube may be damaged a little and not catching, so then you have to increase pressure to go over the first thread and into the next. That would mean more pressure to compress the spring.
I think we all know these horror stories about 'thread stripping' with screw-down crowns, be it with a Seiko diver or some Rolex. I was wondering though how much opening and closing a typical screw down crown can handle. Works like a charm on any screw down crown style watch and preserves the threads. We even mark the unsigned crowns on Seiko divers so we can do the same via clock position. Of course lubing the threads periodically also helps.
With screwdown crowns how does back
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Counter clockwise/backwards first while maintaining slight pressure inwards. At some point you can feel the end of the thread on the crown move over the end of the thread on the case. Then screw in clockwise. Never force. I find the best way to describe the threading as the same as a normal right-handed Rolex -- if you turn that watch upside down, so the crown is on the right, it functions just like any other Rolex sports watch.
If it had 2, it would be a double start thread, and it would screw down quite differently. If you want to see an example of a multi-start thread, look at a bottle cap from a plastic bottle: This one is a triple start thread.I've had my 30 year old Sub service five times and each time I needed a new crown because between the service intervals, I stretched the threads on the crown, compounded with grit every time I opened the crown to wind or set the date. my very old 1967 date adjust rolex crown is very hard to turn need help Vintage Rolex Discussion
Less than one turn to screw and unscrew crown? Vintage Rolex Discussion If you just start screwing the crown down without doing this, there's a chance that you could cross thread the crown and case tube. This results in damage to both threads, and to resolve it both the case tube and crown are typically changed. Here is what a good internally threaded case tube looks like:
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It is possible the first threads on either the crown or tube may be damaged a little and not catching, so then you have to increase pressure to go over the first thread and into the next. That would mean more pressure to compress the spring. I think we all know these horror stories about 'thread stripping' with screw-down crowns, be it with a Seiko diver or some Rolex. I was wondering though how much opening and closing a typical screw down crown can handle. Works like a charm on any screw down crown style watch and preserves the threads. We even mark the unsigned crowns on Seiko divers so we can do the same via clock position. Of course lubing the threads periodically also helps. Counter clockwise/backwards first while maintaining slight pressure inwards. At some point you can feel the end of the thread on the crown move over the end of the thread on the case. Then screw in clockwise. Never force.
I find the best way to describe the threading as the same as a normal right-handed Rolex -- if you turn that watch upside down, so the crown is on the right, it functions just like any other Rolex sports watch.
Omega, Rolex, others: what’s your screw
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good rolex threads on cronw 1 2 turn forum|With screwdown crowns how does back
