Service Junghans Power reserve calibre 80/12

P1060829

A client has sent in his Junghans power reserve watch. It looks to be in pretty good condition, but it’s not running. Parts for this watch will be close to impossible to source, so I hope it goes well! 

P1060831

Movement looks to be in great condition.

P1060832

I remove the oscillating weight and here you can see the autowinder mechanism.

P1060834

All the autowinder wheels look good!

P1060837

One luminous compound marker has come loose, but the rest of the dial is excellent.

P1060838

Dial removed and you can see the power reserve disk.

P1060840

Everything is actually very clean and nice!

P1060843

I start taking out the winding and setting mechanism.

P1060844

Pretty funky barrel construction!

P1060845

Underneath the autowinder plate you find the base movement. Very funky central second pinion tension spring!

P1060848

You might be wondering why the watch was not running as everything looks clean! The oil has turned to glue… I have cleaned away what I can with pegwood and hopefully the cleaning machine will do the rest.

P1060849

Mainspring in the barrel.

P1060851

The movement is cleaned two times and it has removed all the old oil. Now it is ready to be put back together.

P1060852

I have greased and fitted the old mainspring.

P1060870

I oil and fit the shock protection jewels. Now the balance is moving freely again!

P1060871

Gear train back in the movement.

P1060872

Base movement almost back together.

P1060873

I now start putting together the power reserve mechanism.

P1060874

The lower barrel bridge in place.

P1060878

I fit the winding/setting mechanism.


P1060876

Movement almost back together.

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Movement back together and ticking!

P1070007

What a difference from not running at all!;)

P1060869

I reenforce the luminous compound on the dial and add the missing marker. The hands also get new compound matching the dial.

P1070070

Movement back in the case looking great!

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Last touch is fitting the oscillating weight.

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Very funky Junghans!

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