Mechanical WW Completed Landeron 39 repair

[cspinner]

Thought I’d share the end result of the Landeron 39 repair I recently completed. It was the first watch with a chronograph complication to challenge myself with. I couldn't find any Landeron 39 tear down videos on web (plenty of 48 and 51 repairs) so I decided to record my process. I don't have any YouTube presence so don't expect to find anything else on my channel aside from some random mountain bike videos. Anyway, constructive critiques are helpful and I already realized I did some things out of order or unsafely that I will improve upon next time.

Huge thanks to this community that helped me through several snags during the process, and special thanks to NAWCC member Mel for helping me identify a replacement alloy mainspring.

 

[penjunky]

Hi cspinner

Neat lookin all around job, thanks for sharing.
That watch must have had enough parts in it to make two more. Must take a lot of patients, knowledge and sometimes a third hand, which I need.

Just to think how I complain sometimes trying to assemble a PW. So you can use glass jars instead of having to fill the ultrasonic half full? Were you using simple green and one dip?

One of these days I'm going to get into a wristwatch but nothing like you just did, even though I'd love the challenge.

Stay safe and keep up the good work.

Roger

 

[cspinner]

Hi cspinner

Neat lookin all around job, thanks for sharing.
That watch must have had enough parts in it to make two more. Must take a lot of patients, knowledge and sometimes a third hand, which I need.

Just to think how I complain sometimes trying to assemble a PW. So you can use glass jars instead of having to fill the ultrasonic half full? Were you using simple green and one dip?

One of these days I'm going to get into a wristwatch but nothing like you just did, even though I'd love the challenge.

Stay safe and keep up the good work.

Roger

Thanks, Roger for the encouragement. For the basket of parts and plates I used L&R 111. I placed the pallet, balance wheel and the minute recorder spring in a small sealable jar of Naphtha on their own. Not shown in the video is I do a second 10 minute rinse cycle in Naphtha for the parts that sat in the L&R.
I have considered rinsing in distilled water instead and then a quick 2nd rinse in alcohol, but haven’t tried that yet.

 

[penjunky]

For the basket of parts and plates I used L&R 111. I placed the pallet, balance wheel and the minute recorder spring in a small sealable jar of Naphtha on their own.

Hi cspinner

I've read on the forum here that the ultrasonic waves can penetrate glass but never pictured putting the cleaner in the glass then in the ultrasonic. Since I'm in the house I use simple green for wash and rinse, then rinse in water and alcohol (wrong kind) and dry with hair dryer, but, there was always a little rust wanted to show up here and there. I also just cleaned the hairspring in naptha cause I didn't know if it should go in the ultrasonic.

I don't plan on rinsing in any water anymore, just naptha or L&R rinse as I've been wanting to go with L&R for a long while. I also don't use the heater cause in a 15 minute cycle the temp goes from 74 to 99, Graham had mentioned that on another post.

So now I don't have to wonder about how I can rinse with a different solvent without changing in the machine, going to do it your way, in a glass jar.

Also, I've read that distilled water, when it hits certain metals will want to take what mineral content it needs from it for it's own back to normal state (mother nature thing I guess) but maybe just aluminum, don't know if it would have an effect on any watch parts.

This is a good learning experience, thanks for posting and glad I watched.

Roger

 

[gmorse]

Hi cspinner,,

I have considered rinsing in distilled water instead and then a quick 2nd rinse in alcohol, but haven’t tried that yet.

To be clear, the L&R 111 is not a water-based cleaner, it's solvent-based, so water won't be an effective rinse for it, (in fact, you could end up with a viscous mess), and will pose the risk of corrosion. The rinse should be the same solvent base as the cleaner, but without the cleaning components. At a pinch, naphtha will work as a rinse but it's very flammable.

I always use glass jars or lab beakers to hold the cleaning solutions and plain water in the U/S tank with a drop or two of dish soap, which the manufacturer recommends. They also suggest running the tank with just the water in it for a few minutes before use, to de-gas the water; this also makes a difference apparently.

Regards,

Graham

 

[penjunky]

I always use glass jars or lab beakers to hold the cleaning solutions and plain water in the U/S tank with a drop or two of dish soap, which the manufacturer recommends. They also suggest running the tank with just the water in it for a few minutes before use, to de-gas the water; this also makes a difference apparently.

Now I know for sure how I will clean my next watch.

 

[everydaycats]

Thought I’d share the end result of the Landeron 39 repair I recently completed. It was the first watch with a chronograph complication to challenge myself with. I couldn't find any Landeron 39 tear down videos on web (plenty of 48 and 51 repairs) so I decided to record my process. I don't have any YouTube presence so don't expect to find anything else on my channel aside from some random mountain bike videos. Anyway, constructive critiques are helpful and I already realized I did some things out of order or unsafely that I will improve upon next time.

Huge thanks to this community that helped me through several snags during the process, and special thanks to NAWCC member Mel for helping me identify a replacement alloy mainspring.

WELL DONE!!! KEEP UP THE EXCELLENT WORK...
Regards