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HectorLooi
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HectorLooi Distinguished Member

HectorLooi

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It was supposed to be a simple job. Just replace the battery...

But then I noticed there was a speck of dust under the crystal... So I took out the movement to clean inside the crystal. 

Then I noticed the minute hand wasn't centred on the hour... So I removed the hands to realign them. 

Then the minute hand stops moving... I took off the dial and discovered that the cannon pinion popped off when I lifted off the hands. ?

Now I will have to do a full disassembly to fix it. ?

I have to stop being so OCD.

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HectorLooi Distinguished Member

HectorLooi

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Friction pinion all fixed up and reassembled.  

On further thinking, is this a design weakness? If the minute hand is fitted too tightly,the chance of the pinion separating from the wheel again is very high.

Or is there a safer method of taking off the hands?

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PastorChris WRT Addict

PastorChris

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On 3/1/2021 at 7:59 AM, HectorLooi said:

Friction pinion all fixed up and reassembled.  

On further thinking, is this a design weakness? If the minute hand is fitted too tightly,the chance of the pinion separating from the wheel again is very high.

Or is there a safer method of taking off the hands?

Or. . . next time just replace the battery and walk away LOL. 

I think we have all slipped down that rabbit hole many times. Glad you got it sorted.

IMO when such things happen, I look at it as an opportunity to learn more about the watch; as you have done. Most fo us have an extra watch around to wear while something is in process.

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KarlvonKoln Distinguished Member

KarlvonKoln

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I know that rabbit hole too.
The last tiny little Elgin grade #320 I worked on just a week ago *only* needed a NOS mainspring installed.  That's all.
But then I got to thinking the beat could be a tiny bit better.  Had the balance out to tweak it a bit.  It went back in perfectly fine on the first try.  And again on the second try, and I was getting the beat close to perfect.  Then the third time...@#&^%&^@#$!!!!...that miniscule roller jewel would not go into the stupid stinking fork for any amount of love or money!  It was always one side or the other!  I spent the rest of the day sweating bullets with that tiny little thing, trying not to harm it in any way.  It finally went in, and I grabbed a shot of scotch afterward.  The watch ran supremely well afterward, but oh Lawdy it made me earn my bread and cheese.

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      Unfortunately I'm not that lucky. I started on the train side and after I noticed the binding I pulled everything out except the driving wheel to rule everything else out. It still binds. I'm going to double check that the pinion is fully seated on the staff first, then if no joy I'll push the bridge jewel up a fraction of a mm. Fingers crossed!
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      By doober · Posted

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      By GuyMontag · Posted

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