odd oiling in video

[johnbicht]

I just saw a video https://www.youtube.com/watch?v=tYJ9KkFK9wE&t=1229s of a service of a GMT Master where the tech oiled - very little - the teeth of the inner wheel of the reversing wheel assembly. Is that recommended?

[mnbookman]

Don’t have time to watch the video but that is not SOP. Oiling those teeth is not needed; they are shaped to have almost no friction unless they are locked.

However, when you oil them, you actually increase the drag and reduce the efficiency of the ad autowinding mechanism.


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[SearChart]

Yeah I wouldn't lubricate those...

[watchmaker]

Unless I missed it on the video (please correct me if I have), the watchmaker oils the pivot and not the teeth (20min 31sec into the video). That is the correct procedure.

[SearChart]

Originally Posted by watchmaker

Unless I missed it on the video (please correct me if I have), the watchmaker oils the pivot and not the teeth (20min 31sec into the video). That is the correct procedure.

He oils the teeth of the inner wheel before assembling the reverser.

[brandrea]

Originally Posted by SearChart

Yeah I wouldn't lubricate those...

I’m gonna go with whatever Bas says

[watchmaker]

Originally Posted by SearChart

He oils the teeth of the inner wheel before assembling the reverser.

Yes he does...missed that the first three times I watched.

Note to self: don't post before coffee in the morning!

[SearChart]

Originally Posted by watchmaker

Yes he does...missed that the first three times I watched.



Note to self: don't post before coffee in the morning!

I skipped through the video and missed it at first as well.

[johnbicht]

What do you think of assembling the autowind on the movement as in the video. I had never thought of that and I have had a real PITA time assembling them. It is not what Rolex calls for but it looks a good technique.

[watchmaker]

In the absence of the correct assembly holder for the automatic module, assembling on to the movement is not the worst idea, but it is definitely a compromise.

[johnbicht]

Why a compromise? I don't see what can be wrong.

[watchmaker]

You would either be lubricating the lower side pivots or jewels before you assemble the module, or you need to remove the assembled module from the movement and lubricate them then.

Oiling a pivot or jewel before you insert one in to the other is (at least in my view) a compromise because you run the risk of the oil moving from the required location when you assemble the two parts together. Sometimes it’s the only way to do something in which case it is an unavoidable compromise - such as with the drive wheel which connects the automatic module and ratchet wheel.

[johnbicht]

I understand your reasoning. Thanks for clarifying.

[watchmaker]

[SearChart]

Originally Posted by watchmaker

In the absence of the correct assembly holder for the automatic module, assembling on to the movement is not the worst idea, but it is definitely a compromise.

The holder makes it so much easier for lazy people like me

[johnbicht]

That's a lovely thing. Wish I had one.