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Bfg 866 Dlg, 17 Jewel Movement. My First Disassembly, Cleaning And Re-Assembly...and It Is Working.


noirrac1j

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I have been working on this little Baumgartner 866 pin-lever engine for a few days and finally put back all of the drive components back late last night. It is ticking away very nicely. Tonight I will replace the minute, hour and calendar wheels--Yes, they are all wheels! I have posted the disassembly and will post the other pictures later. I want to thank Mark for his excellent video showing the AS1900 overhaul because that is what I used for guidance. During several places I simply had to follow my own way obviously because this movement is very different than that one, but it worked! I cleaned it with Naptha and afterward got my little oilers and put it back together. The hardest part was getting those wheels seated properly in their pivots and also the pallet lever. One thing I couldn't figure out was how to remove the Novodiac shack system.....I'll have to return to it later. I also replaced several parts from a new BFG 866 I bought for $20.00.  I could not believe when the little thing sprang to lif after assembly...it was still running nicely this morning when I left the house.

Joe

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  • 4 years later...

This is FANTASTIC!!!! I have this movement in my own jump hour watch(es) and am hoping I have the patience to strip down and repair mine too. Many, many thanks for posting these excellent pics. 5 years on, but you are my newest hero!

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2 hours ago, ac30kev said:

This is FANTASTIC!!!! I have this movement in my own jump hour watch(es) and am hoping I have the patience to strip down and repair mine too. Many, many thanks for posting these excellent pics. 5 years on, but you are my newest hero!

Wow thanks!  I still have one of my original Sicura jump hour, and have many extra parts, so feel free to ask.

J

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18 minutes ago, noirrac1j said:

Wow thanks!  I still have one of my original Sicura jump hour, and have many extra parts, so feel free to ask.

J

Oh, you will wish you hadn't said that. LOL. One question though; how in the name of blazes did you get the erm, fork thingy (regulator? Sorry, I'm new to all this) to stay upright in a poc over on the assembly thread (sorry, on phone and cant look and type) there doesn't seem to be a hole for the pin to fit into and the covering plate doesnt seem to touch it... confused.com

 

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9 minutes ago, ac30kev said:

Oh, you will wish you hadn't said that. LOL. One question though; how in the name of blazes did you get the erm, fork thingy (regulator? Sorry, I'm new to all this) to stay upright in a poc over on the assembly thread (sorry, on phone and cant look and type) there doesn't seem to be a hole for the pin to fit into and the covering plate doesnt seem to touch it... confused.com

 

Do you mean the pallet fork? It is held in place at the jeweled end of this bridge.... 

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3 minutes ago, ac30kev said:

2014-09-23 22.50.27.jpg

This is the pic I mean...

Ah, yes- OK. The bridge is NOT in place in this pic, and you can see that the pallet fork is angled in towards the escape wheel. This is the preliminary position of the pallet fork just before the bridge is placed over the pivot and adjusted with tweezers.

J

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yes, Thats the part. I can see that the bejewelled bridge should hold that in place, but on the pic I've put above, you can see the fork standing up by itself. is this some kind of magic us watch newbies don't know of yet?

 

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Rather than hi-jacking this excellent and useful thread, I tried to send you a message noirrac1j, but the system told me you cant accept my messages. Would you mind if I asked a few questions over the next few weeks (when I can get time to play with, er attempt to fix, my broken movement?

 

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34 minutes ago, ac30kev said:

Rather than hi-jacking this excellent and useful thread, I tried to send you a message noirrac1j, but the system told me you cant accept my messages. Would you mind if I asked a few questions over the next few weeks (when I can get time to play with, er attempt to fix, my broken movement?

 

Sure!

Joe

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