Jump to content

Recommended Posts

Posted

Gents what’s the best way to tighten one of these canon pinions, it seems way too loose and neither of the hands are moving when in place. Cheers for your help once again.

i take it to remove it the centre wheel pinion is driven out from the dial side?

 

EF288499-1B8B-4A9A-B60D-29639C8413E7.jpeg

20843CB1-2501-4C0C-BA86-6D21F51EA52A.jpeg

1D3189D7-C4FF-482B-BF5C-86A2408ED24F.jpeg

Posted

You need to use a staking set and with the right stake tap on the outer barrel of the cannon pinion. You need to put a steel wire in the cannon pinion while doing this so you don’t ‘dent’ it. Be very careful not to over due this as reversing it is not easy. I remember years ago I simply put a hair it the cannon pinion while pushing it on and it worked well. That’s if you don’t have any other options as all.d4971a5e4d649c90485725d1d82da9f2.jpg


Sent from my iPhone using Tapatalk Pro

Posted (edited)

IIRC, the center-wheel arbor has a bit of relief in it where the canon pinion dimple rides. I suspect that the canon pinion is not all the way down on the arbor, i.e., the arbor not well through the canon pinion. You'd best support the bridge side of the center arbor while you tap down the canon pinion. I could be wrong, but that type canon pinion seems to work that way. Good luck.

Edited by MrRoundel
  • Like 1
Posted

Many thanks I’ll have a double check and see if that’s the problem, I have another identical movement and the rotation of the canon pinion is stiffer than this one

Posted

Absolutely brace the other side of the center wheel if you intend to tap the cannon pinion down or you will bend the plate.


Sent from my iPhone using Tapatalk Pro

Posted

Well guys I managed to get it done, my staking set was too small for the canon pinion, at first I tried to see if it wasn’t seated correctly but to no avail so I had to pop it off and use my old vintage canon pinion tool, a couple of quick taps and all is well.
Thanks for the help and advice once again.

image.jpg



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Use probably the same key as you wound it with - on the end of the cannon pinion is a square that the minute hand is mounted to. You just need to turn the square, which will overcome the cannon pinion's friction and set the hands. That said, this could be the reason your wheel and pinion were separated and thread damaged. If the cannon pinion had been rusted or seized on and it was turned, it could have damaged the connection between the pinion and wheel. If it felt like your cannon pinion could turn on the center wheel arbor before and there is some grease under it, this should not be a problem.
    • I've gone the threadlocker route having tried the material insert approach without success. The watch runs but I'm chary about winding it more than a turn or so in case the 'repair' gives way; still, there's an element of satisfaction in getting it going at all as it's a single bridge/plate design which I could only assemble dial side up & then flip over in order to be able to insert the 3 securing screws. The reassembly took a number of attempts over many hours but at least I got considerable manipulation practice & the experience will come in useful in future. I'm now faced with my ignorance about how to manually set the the time as this key-wound Waltham pocket watch doesn't have the usual pull-out stem facility. All I can think of doing is to adjust the regulator arm until it catches up with the current time & then revert to the central position.....
    • So the crown should be a 0.9mm thread as you've ordered. How do you know the thread size is wrong if you've not removed the broken stem yet?
    • You'll need to be extra careful with the Citizen as Information along with Parts and Donors are pretty much none existing. You'll probably end up having to use a stem extender, that's hoping there's enough stem left in the movement.
    • Thank you! That's immensely helpful. I appreciate the trouble you've taken. The initial hiccup aside, I do hope to treat this watch with great care and respect. I've certainly learned one thing not to do, and also just the general need to start out very slowly and very carefully.    
×
×
  • Create New...