JLC Masterclass Part 2: Caliber 875 Assembly
Manufacture

JLC Masterclass Part 2: Caliber 875 Assembly

By nitediver · Aug 28, 2012 · 9 replies
nitediver
WPS member · Jaeger-LeCoultre forum
9 replies2092 views8 photos
f 𝕏 in 💬 ✉ 🔗

Nitediver's 'JLC Masterclass' series offers a rare, detailed look into the intricate world of watchmaking. This installment, Part 2, focuses on the challenging assembly of the Jaeger-LeCoultre Caliber 875, providing a unique perspective on the precision and skill required to bring a complex movement to life. Readers gain insight into the delicate process of reassembling tiny components, highlighting the hands-on experience of a watch enthusiast.

9 collectors discussing this on the WatchProSite forumJoin the Conversation →

JLC Masterclass Part 2 – assembly of the Cal. 875

(Part 2)

 

Now the real challenges comes: putting all the part back into the movement!

 

Ok, the two spring barrels are back where they belong. It is more tricky than it looks on the picture…there is a wheel under the right spring barrel. And there are tiny wheels on top of the left spring barrel, which have a square center and hence must be turned to fit on the axis.

 

Center wheel (for the second) and minute wheel (the third one, lowest in the picture) installed. More tricky than expected.

 

The first bridge installed. Needs a bit of practice, since the pinions need to fit into the borings….obviously!

 

Dial side of the Cal. 875 with big date display

 

 

Once in a while, we need some help by the master himself…

 

Looks almost like a real watchtmaker ;-)

 

Reserve de marche mechanism put in place

 

The large bridge installed. Almost done…yet the escapement wheel is still missing….

 

This was the most difficult part: the escapement wheel needs to go under the bridge which I found really hard.  But it worked, all wheels were turning when I screwed the last bridge back in place. I was so excited, that I forgot to take a picture of the final result! Or maybe it was the excitement to see the Duometre a Spherotourbillon….

 

(End of part 2 – part 3 JLC tourbillions to be followed)

 

Key Points from the Discussion

Advertisement
The Discussion
AM
amanico
Aug 28, 2012
Ok, you're a good pupil!

Do you know the treatment reserved to those for fail? :) Best, Nicolas

NI
nitediver
Aug 28, 2012
thanks for the flowers, Nicolas

No champagne for those who fail....only white wine. Tough life, isnt it? cordialement, Stefan

AM
amanico
Aug 28, 2012
You escaped from the Vallée de Joux Torture, then...

... The impalement on the top of a church roof... ;) Best, Stefan. And congrats! Nicolas.

NI
nitediver
Aug 29, 2012
lucky me....

...that i managed to put all the parts back in the right place.... At any rate, traditons seem to be friendlier in Lucerne than in the Valee de Joux then. Have a great day, Stefan

MA
Mark in Paris
Aug 29, 2012
A very close insight ...

as if we were there. but, don't do this at home! Cheers.

NI
nitediver
Sep 4, 2012
i wont dare...

...to take anything valuable in my hands. But i feel inspired to try my "skills" on an old and beaten up moevement, i mean somehting i wont regret if i cant reassemble it anymore. Lets see..... Best, Stefan

Continue the conversation

This thread is active on the Jaeger-LeCoultre forum with 9 replies. Share your knowledge with fellow collectors.

Join the Discussion →