1601 Movement Question

[InsideTrader]

Can you wind and set the 1601 movement in either direction without causing damage to the movement?
Also, when turning the crown to set the movement, what should the correlation be? Clockwise on the crown and clockwise on the hands of clockwise on the crown and counterclockwise on the hands?

[interestedwatcher]

I've always been told you should only go forwards in time, but you can go back wards an hour or so to set the time if you over shoot.

[Tools]

Originally Posted by InsideTrader

Can you wind and set the 1601 movement in either direction without causing damage to the movement?
. . .

The 1601 Datejust used a 1570 movement.

You can set the time in either direction, and you can even set the date backwards on this non-quickset movement.

They only wind in one direction, clockwise, but it doesn't do any harm to turn the crown backwards, it just ratchets.

[timemaestro]

You can set the time in both directions and the date too.

[InsideTrader]

Originally Posted by Tools

The 1601 Datejust used a 1570 movement.

You can set the time in either direction, and you can even set the date backwards on this non-quickset movement.

They only wind in one direction, clockwise, but it doesn't do any harm to turn the crown backwards, it just ratchets.

Have I got it wrong? I thought 1601 was the movement but you’re telling me it’s the watch and the movement is the 1570?

[Waterproofpt]

Originally Posted by InsideTrader

Have I got it wrong? I thought 1601 was the movement but you’re telling me it’s the watch and the movement is the 1570?

That’s correct. Technically it’s a 1575 when it has the date but the movement itself will be marked 1570. The movement was in a number of models in addition to the Datejust 1600 line.


Sent from my iPhone using Tapatalk

[InsideTrader]

Originally Posted by Waterproofpt

That’s correct. Technically it’s a 1575 when it has the date but the movement itself will be marked 1570. The movement was in a number of models in addition to the Datejust 1600 line.


Sent from my iPhone using Tapatalk

Thank you for the education sir. Are you an expert in this style of watch and could answer a repair question for me?

[Waterproofpt]

Originally Posted by InsideTrader

Thank you for the education sir. Are you an expert in this style of watch and could answer a repair question for me?

Certainly wouldn’t call myself an expert but I have done a lot of reading and the Datejusts are one of my favourite models. Owned ‘a few’ :) And recently had a fun project converting a 1570/75 into the GMT version.

But I also have a buddy who is a Rolex watchmaker and he can deal with pretty much any issues or answer any questions I might have.

What’s up?


Sent from my iPhone using Tapatalk

[InsideTrader]

My crown has separated from the stem. There is a hexagonal shape on the shaft that the crown now slips over. I am unsure of the correct procedure to correct this. I am able to remove the stem from the watch but I am not sure what needs to be replaced, glued, fixed, or whatever the procedure is for fixing the issue properly.

[Waterproofpt]

Not glue.
A photo would help.


Sent from my iPhone using Tapatalk

[Waterproofpt]

Don’t try to remove the stem. The watch has to be opened and the stem needs to be ‘released’ properly. What you need to do Depends if there is thread damage to the stem.


Sent from my iPhone using Tapatalk

[InsideTrader]

I have already removed and reinstalled it to diagnose the problem. Without removing it, I can send you a picture of the crown only. Although I have no clue how to post a picture on this forum.

[SearChart]

Not worth trying to fix that, I'd source a new crown and spare the headache.

[Waterproofpt]

Here’s a link to how it’s done. Pretty good description. Other than he’s using pliers to hold the stem.


https://youtu.be/zlAnvH-OlbI

As he mentions, you can use some loctite on the last few threads of the stem.

It could be as simple as the crown just unscrewed from your stem. But it’s also possible the threads have been stripped. It’s virtually impossible to tighten the crown on the stem enough without taking the stem out. Not hard for a decent watchmaker to do. But a key is having the correct caseback opener to get at the pin or screw to remove the stem.

There’s also a tool called a pin vice that is made to hold the stem while it’s being done. Pliers are not the best - can bend or damage the stem or strip threads.

https://www.watchmaterial.com/bergeo...e-stem-holder/


Sent from my iPhone using Tapatalk

[Waterproofpt]

My watchmaker buddy says he uses a thread lock but if the hex is showing then the thread of the crown to the hex tube has come undone?
There should be a tiny spring that tensions the hex slide.
That’s is a different thread to the stem.

Need a photo.


Sent from my iPhone using Tapatalk

[SearChart]

Originally Posted by Waterproofpt

My watchmaker buddy says he uses a thread lock but if the hex is showing then the thread of the crown to the hex tube has come undone?
There should be a tiny spring that tensions the hex slide.
That’s is a different thread to the stem.

Need a photo.


Sent from my iPhone using Tapatalk

If it's just loose from the stem it is any easy fix like you said, but if the hex comes undone I'd just stay away.

If it was/is a good condition oyster patent crown I'd attempt it to save it and keep it original. But if it is a modern twinlock (pre monobloc of course) it is just not worth the hassle and I'd just get a new one as they're only €45 anyway.

[Waterproofpt]

Here’s a crown assembly that would screw right on to the stem. Actually consists of 4 parts: crown, 2 tubes shown and there’s a little spring inside.



Here are 2 of the parts. Crown and the larger tube.



From the sounds of it yours has come apart from the tube shown and the spring could very well be gone.

Unless it looks like the top pic, my guess is you’ll need a whole new crown (and stem) assembly. That’s the best way to go.


Sent from my iPhone using Tapatalk