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How to install cannon pinion on AS 1950/51

Lc130

By Lc130
in Watch Repairs Help & Advice

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Lc130 WRT Addict

Lc130

Posted
Posted

Hi All

Still very much a beginner.  Next victim is an AS 1950/51.  The cannon pinion doesn't go over the center wheel.  It goes on this which is geared from the mainspring wheel (of course I don't know the correct name).  Question:  what is the safest way to push the pinion on.  Likely easiest to do it after the train and train plate is on.  But then the jewel would be taking all the force as the cannon is pushed on.  Another option is install the cannon pinion as first step and use a metal plate with hole as support for the other side of the pinion/wheel.  I bit fiddly, as I've tinkered with this.  Lastly, use my finger on the other side.  Though, uneven surface could deform the wheel.

Any guidance?

Thank you

Charlie

 

IMG_4187.thumb.JPG.46cfd743d902eaef89650f2da7ef6d84.JPG

rogart63 Distinguished Member

rogart63

Posted
Posted

I use a staking tool  for this . Support the wheel from the underside.  The cannon pinion you have on the picure should move free on the stud . I think it's called something like intermidiate frictiuon pinion. They are prone to wear and are hard to tighten . I have greased mine with braking 8217 grease for som extra friction . Works fine. 

dadistic Distinguished Member

dadistic

Posted
Posted (edited)

If you are not ready for a staking tool, this is a handy little tool to help in these situations. This one is called a hexagon anvil, and is not very expensive.

 

Watchmakers and Jewelers Anvil

Edited by dadistic
grammar
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