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6 September 2018, 06:38 AM
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#1 |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Ugh, Dang Calendar Nut...
Okay Folks, working on another project. I have a 1570 movement that I'm doing some repairs on. Just replaced the upper jewel on the auto winder, now moving on to servicing the movement. This is the first 1570 that I'm working on, can some kind sole tell me how to remove the calendar nut? Looks like it might take a special driver? If so, where can I get one? Is there another way to remove the nut? Help greatly appreciated. Cheers! -Norm
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6 September 2018, 08:17 AM
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#2 |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Well, okay, I found an article that said you need a special driver, so I fabricated one from a spare screwdriver on my micro mill. I gently turned the nut counterclockwise but the nut just spins and doesn't come off. Is there a trick to this? Sorry for the mis-oriented picture, taken from my phone. -Norm
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6 September 2018, 10:22 AM
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#3 |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Actually, the nut is turning the entire stem/bolt. Also, if anyone can confirm if the nut screws off clockwise or counter clockwise, that would be great. Cheers! -Norm
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6 September 2018, 11:26 AM
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#4 |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Figured it out after studying the nut and slightly protruding threads under a microscope. To remove the calendar nut, you must turn CLOCKWISE. Cheers. -Norm
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6 September 2018, 12:50 PM
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#5 |
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"TRF" Member
Join Date: Feb 2015
Real Name: Michael H
Posts: 964
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counter clockwise. sounds like you have a loose stud
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6 September 2018, 01:00 PM
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#6 | |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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To remove the nut, I turned it clockwise. The nut unscrewed and the stud remained. Cheers! -Norm
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8 September 2018, 01:16 AM
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#7 | |
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TechXpert
Join Date: May 2012
Location: Earth
Posts: 23,635
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You don't really need the special tool to take it off, you can carefully use a screwdriver. I'm often too lazy to look for my tool anyway.
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8 September 2018, 01:18 AM
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#8 | ||
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TechXpert
Join Date: May 2012
Location: Earth
Posts: 23,635
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8 September 2018, 02:02 AM
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#9 | |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Bas - I was wondering if the three grooves meant anything. I thought perhaps Rolex was just being fancy
 . Now I know, thank you for pointing that out. Cheers! -NormQuote:
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8 September 2018, 07:55 AM
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#10 |
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"TRF" Member
Join Date: Feb 2015
Real Name: Michael H
Posts: 964
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This tool!
  Sent from my iPhone using Tapatalk |
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4 October 2018, 02:29 AM
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#11 |
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TechXpert
Join Date: Jul 2009
Real Name: Tylden Reed
Location: Kent UK
Watch: GMTII and more
Posts: 175
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The post should be a tight fit so that it stays where you want it but loose enough to allow the wheel endshake to be adjusted.
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5 October 2018, 12:08 AM
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#12 | |
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"TRF" Member
Join Date: Jul 2018
Real Name: Norm
Location: Virginia, USA
Watch: 2005 DateJust
Posts: 103
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Thanks, Tylden, for the insight. Cheers! -Norm
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