As 1882

[rogart63]

Having trouble with a serviced AS 1882 . This watch is only making a lot of trouble . At first i bought it and it didn't work so very well . Tried to service it but it didn't go so well . Something wasn't right  . Could get the part together . So i bought a nice looking watch with the same movement cheap . That movement is now serviced and running strong . It works ok in the timegrapher . But the hands won't follow the movement . The hour and minute hands stops or is slow . But the second hand works and keeps ticking .  I will soon get an old movement that missing some parts .Which i have from the first movement . Going to get that movement serviced and see if i can get it to work in the other nice looking watch . What is the trouble with hands ? 

Edited February 5, 2015 by rogart63

[Geo]

The cannon pinion is needing tightened. There are various tools available for doing this, have a look on EBay you should be able to pick one up cheap.

[WillFly]

+1 for Geo's reply - I've had this problem with a number of movements over the years. Slow or wobbly and unpredictable movement in the minute hand - corrected by either tightening or replacing the cannon pinion.

[ash145]

Hi Rogart, I have become abit of an expert on the AS movements after purchasing a Mido with a similar problem, 3 movements later I got it working!. It is the small gear on the end of the Large driving gear that needs to be tightened. Its part number 201/1. The Canon pinion is driven from that along with the date change mechanism. Cousins have the parts list if you search for AS1882.

[rogart63]

Actually suspected that  gear . What should i search for on Ebay ? Cannon pinion tighten tool ? .

Edited February 5, 2015 by rogart63

[Andyclient]

Actually suspected that  gear . What should i search for on Ebay ? Cannon pinion tighten tool ? .

Canon pinion tool would do it there is one here in this lot , it is the tool in the top left hand corner of the box ebay item no 191502866512

 

Edited February 5, 2015 by Andyclient

[ash145]

I use a blunt pair of nail clippers, you can guess why I use a blunt set!!..find a drill bit or equivalent (think its 0.65mm for that gear) and gently squeeze. It actually quite simple if you take your time.

[mwilkes]

That nail clippers idea is fantastic - thanks ash.

[Geo]

Here's mine, it's a set of wire cutters that I have drilled and tapped to accept a screw to limit the amount of squeeze that you give the pinion.

If you go this route it is easy to make very small adjustments at a time until you get the correct fit. It can be done without using a drill or a mandrel in the pinion if you are very careful, but it is a lot safer to use one. Remember, this is a trial and error fitting exercise to get the best fit.

[bobm12]

Nice thread, I was going to suggest the nail clipper but now I want to make a tool like Geo's !!

[rogart63]

Naaw i need to get the whole movement apart again . I suppose i will need to support the other side when i press the cannon pinion on the large gear again . Or would it work to support only jewel where the axle sits ?

[Geo]

Provided you don't make the pinion too tight, it should just snap in place with the rest of the movement assembled.

[rogart63]

I will try it when i got the other movement . Have a blunt nail clipper so i will try that first . Good to learn something today . Thanks 

[clockboy]

Please find attached pic of the tool I have used a few times picked it up a few years ago on eBay with other tools.  I think its a hand made job but works treat.

 

 

Edited February 5, 2015 by clockboy

[Jim]

If you have a staking set there should be a stake or a stump that would work.    BE VERY CAREFUL NOT TO OVER DO IT.   broaching the whole out after it has been dimpled too much is a real pain.   Personally I would use the staking set or an actual cannon pinion tightening tool   that in like a mini staking set.  I don’t like the clipper type if the cannon pinion is thin as in the offset cannon pinion type is. It is very easy to destroy it by over-tightening it.    I have attached a photo of the one I use  

 

Sincerely,

Jim

[Jim]

The one clockboy has is basically the same thing.  Nice tool    

 

Sincerely,

[rogart63]

Just to make sure i do the right pinion i took a picture of it on non working spare part movement i had  . Could take that pinion if it's nice and tight too . The one to the right is the cannon pinion ? 

[Mark]

I prefer using the cutter style tightener, same as geo's. I find you get the most control and it is nearly impossible to fudge it. I still slide the CP down an old oiler first, but the screw on the cutters make it impossible to crush the CP in any case.

[Jim]

I will defer to you here Mark   putting the CP over an old oiler is brilliant  thank you.    The thin offset ones have always given me trouble.  I have over done a few  :-(

 

Thanks again for the post

 

Jim

[clockboy]

Jim, Don,t  know if this PDF is any use but might be handy to ID parts etc.

 

 

AS 1882.pdf

 

 

[rogart63]

Have fix the cannon pinion and it has been ticking with some odd hands i had in a box . Just to see if it works ok . Now i can put the datewheel and date mechanism back again . Had to do it a few times and had to support  the wheel from the other side when i pushed it on . Looks a little strange with hands .It's 8 a´ clock 

 

[Geo]

Well done Rogart! :)

[Jim]

Congratulations   well done

 

Sincerely

Jim

[rogart63]

Have one more to go :pulling-hair-out: . Got a repair movement today in the mail . Learn by my mistakes so hopefully it will go much better this time . 

[bobm12]

Excellent job, congratulations rogart.