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New to the hobby


Netzilla

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Hello, I'm new to the watch repair hobby. I've several watches and a aptitude for most things mechanical, from engine repair to now watches. The engineering behind watches as always intrigued me and so I am dipping my toes into this hobby. If anyone has any advice on tools/equipment/suppliers please feel free to DM me!

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    • Thanks everyone for your helpful replies. I think between us we’ve worked out what’s going on. Next job is to have a proper look at this great wheel assembly, see if I can remove the clip and the friction fit pinion, give the bits a good clean, then put it back together with a bit of blue grease. I’ll also get the pallet fork under the microscope to see if it’s ok or been damaged. 
    • The cannon pinion (be it conventional style or what you see in this movement) should slip on its arbour so the hands can be set independently without affecting the gear train.  If there is too much friction between the cannon pinion and the second wheel, turning the hands to set them backwards can sometimes force the escape wheel teeth to overrun the pallet stones, creating the behaviour you describe. The train is running in reverse when this happens.  This can often chip the pallet stones. I’d say at least half of the watches I’ve inspected with very tight cannon pinions had chipped pallet stones. Hopefully this isn’t the case with your watch.  I’m not familiar with this movement but you need to get the friction in the cannon pinion adjusted correctly.  Hope this helps, Mark
    • Pallet fork was in. I’d had the movement running ok, and only removed the balance to flip it over and install the keyless works and date mechanism. The pallet fork wasn’t locking the gear train when hand setting - it was oscillating as the escape wheel rotated. This may have been in one direction only - can’t remember. 
    • Hi   Find attached parts/repair notes for the JLC 911,  might be useful. JLC_JLC 910, 911.pdf JLC_JLC 910, 911 Repair Notes.pdf
    • Hello and welcome to the forum Dan. Used to know Middlesboro quite well, that was twenty years plus ago. Attached a little reading to get you started. TZIllustratedGlossary.pdf
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