6497 Not Working

[newguy]

Hi all,

 

I have just had a problem with my 6497 and have finally fixed the issue. The click spring had stopped engaging, and I have replaced the click spring and now everything is back in order. When I turn the crown, the mainspring is getting wound (and it stops when it is fully wound), but the balance spring isnt running (the whole watch isnt running, but the way I can tell is that there is no movement). 

 

The movement is on its own and has no dial or hands and is uncased. Any ideas of what may be wrong with it?

[Geo]

Was the click spring broken or distorted? If it was broken, a bit of spring might be lodged in the drive train.

[newguy]

No, I had an issue with a different watch (the other one you replied to that is now fixed). I thought that the click springs were the same size, so I pulled the one from my 6497 and tried to use it on the other watch. When it didnt work, I put the 6497 back together (although getting the click spring to function correctly was a real pain in my **BLEEP**), but now the whole thing doesnt seem to work. I will try taking off the mainplate and see if there is something obstructing its ability, but if there isnt, what else could it be?

 

Thanks

[Geo]

Tricky question. If it ran before you may have bent the hands when handling it, or more likely a tiny piece of dirt has entered the mechanism.

[matabog]

Maybe when you put back the balance you overbanked-it by mistake - sorry if it is a stupid idea, I just want to help. Also check that the pallet engages the anker wheel properly (and lets it go also). Also check the balance wheel staff for proper vertical motion, check the antishock jewels to be centered.

Edited June 18, 2014 by matabog

[WillFly]

Cracked balance jewel?

[matabog]

No, not cracked, but off-centered - when you put back the spring over the top jewel the hollowed jewel and it's support might settle at an angle. Highly improbable but easy to check. I happened to me, but I am just an enthusiast.

[bobm12]

I would also check for the pivot points in the balance wheel, escape wheel and fork just in case any of them had suffered during reassembly. I remember my first watch I "serviced", I broke one of the pivots in the balance wheel then on my second watch, I broke the balance spring checking to see if the pivots were good! Oh well!

 

Robert 

Edited June 29, 2014 by bobm12