Issue with Seiko crown?

[Massimo77]

Hi guys. I have a problem with my Seiko SPB147. The problem is in the screwing of the crown. To screw it correctly I must first apply pressure, turn it anti-clockwise until I hear a sort of click, then screw it normally (until until it stops regularly). If I don't carry out this procedure, the crown after he first two turns of screwing, get it stuck (at this point I have to unscrew it slightly, and then screw it back in to unlock it). I don't have this problem with other watches, where I simply screw the crown clockwise until it stops.

The watch is new. I have already tried to use dental floss to clean the thread, but the abnormal functioning remains. I wanted some advice, should I send it in for assistance? Or, as they advised me, is it a normal functioning?

[AndyGSi]

10 minutes ago, Massimo77 said:

To screw it correctly I must first apply pressure, turn it anti-clockwise until I hear a sort of click, then screw it normally (until until it stops regularly).

This is the correct way and normal practice as you described.

[tomh207]

For me this is nothing unusual with good tolerance threads. The crown has a spring in it which you have to depress, the anti clockwise rotation with a slight click lets you know that the threads are ready to be properly engaged and tightened normally. This is usual behaviour for fine close tolerance screws, bolts etc. looser tolerance ones are just turning on the end of the threads until they catch. What you describe with the binding if you don’t follow the procedure is to be expected with good tolerance threads as they were not lined up correctly to allow the threads to engage properly.

 

Tom

[Massimo77]

1 hour ago, tomh207 said:

 What you describe with the binding if you don’t follow the procedure is to be expected with good tolerance threads as they were not lined up correctly to allow the threads to engage properly.

 

Tom

thanks for the answers and explanations. so it is not to be considered a defect. right?

[CYCLOPS]

the threads could have been mis-aligned from a dealer or previous owner causing the issue, I have seen the same issue on some other brands including Rolex, I do not think one should have to turn backwards to align threads but in your case the damage is done and if it still works with your knowhow and still is water resistant then leave till worn out and needs replacement or replace the crown and tube to your satisfaction ...

[AndyGSi]

1 hour ago, CYCLOPS said:

I do not think one should have to turn backwards to align threads

The correct way to insert anything with a thread be it a nut, bolt, screw or watch crown is to rotate in the opposite direction till the threads align and then tighten.

[CYCLOPS]

you are correct Andy, I do the same on nuts and bolts but most people with screw-down crowns on their watches will not perform that process unless taught so, even so Missimo said he does not have to do this act on his other watches, so as I said he should replace the tube and crown if it is an issue......