Jump to content

Pallet Adjustment Help....

DJW

By DJW
in Watch Repairs Help & Advice

 Share

Recommended Posts

DJW Super WRT Addict

DJW

Posted
Posted (edited)

I'm working on a Hamilton 917 and while testing the functions after reassembly I noticed that the escapement is showing a fault.

 

While checking the pallet operation on the escape wheel, I noticed that about 3-4 times per revolution the pallet fork will not snap over to the entry side banking pin. Usually when I check the locking and unlocking of the pallet, the pallet will snap from banking pin to banking pin with just the slightest touch of the tweezers. This pallet (Only on the Exit Stone) with release the escape wheel, but not snap over to the other banking pin. The escape tooth entering the pallet hits the entry stone on the face and forces the pallet back to the exit side banking pin without first locking on the entry pallet stone.

 

To narrow this down to the pallet and not the escape wheel, I swapped out the escape wheel and the same thing happens.

 

I swapped out the pallet with another and the problem disappears. So I'm confident that the pallet is at fault, but I'm not sure which pallet stone to adjust. I'm thinking the exit stone should be pulled out a bit, but I'm not 100% sure....

 

Any ideas on what I should do?

Thanks!

Edited by DJW
Link to comment
Share on other sites
DJW Super WRT Addict

DJW

Posted
  • Author
Posted

I really tried but all I have is my phone! It's just not working... I can say that it does appear that the escape teeth are hitting a lot shallower on the entry stone as opposed to the exit stone, quite a bit actually. Maybe a little more than half as much? Does that make sense?

 

So maybe the entry stone is not out far enough to catch the tooth?

 

BTW, I installed the balance and it seems to run quite well regardless!

 

I'm getting 300+ amplitude in every position (I did install a new mainspring).

Link to comment
Share on other sites
Mark Distinguished Member

Mark

Posted
Posted

Try it on one third wind - if it is stopping then you need to remedy the pallets, possibly by adjusting the lock.

 

 

If you are getting a nice 30 hours out of it on a full wind and it's keeping time, then I would not go to the trouble. 300 is a good amp. This is why I like the timing software from Graham Baxter (Google it) as you can leave it running all night and then check the graphs in the morning and see what gremlins you can find :)

 

 

Link to comment
Share on other sites
DJW Super WRT Addict

DJW

Posted
  • Author
Posted

OK, so I checked the watch on just 2-3 winds and it runs fine and does not stop.  Although it really bugs me that I know there maybe something out of adjustment, I guess I won't worry about it. I'll check it in the morning to see how it's running.

Link to comment
Share on other sites
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • ManSkirtBrew
      1972 Bulova President "E" Sea King 11ACACB movement

      By ManSkirtBrew · Posted

      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!
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Happy to have helped, great way to start the day with a win! 🥳
    • doober
      Rado rotor removal

      By doober · Posted

      Thank you for the advise!! It worked. The setting screw was a lock/unlock to remove the rotor. 
    • GuyMontag
      1972 Bulova President "E" Sea King 11ACACB movement

      By GuyMontag · Posted

      I have that French tech sheet too, it is a little different than the English one (eg, it doesn't have the auto works diagram). BTW, it looks like you are looking up the case number in the 1979 ABC supplement. The 1974 ABC catalog does have the 3093 case. As you determined it takes the 1222-5 crystal.  When I serviced my President 'A' (which also takes that crystal), I was able to fit a 29.8 crystal from my DPA crystal assortment. Those are, in my opinion, a great deal. The assortment comes with 10 sizes each from 27.8mm to 32.4mm in 0.2 increments. I pretty much use them for any non-armored crystal that takes a high dome crystal. I think they no longer make them but Cousins has still has some in stock but when I bought them they were around $40 for the set and now they are around $100. Still, at 40 cents a crystal it's still a good deal. For the large driving wheel, I remember I once assembled the keyless/motion works first and when I placed the large driving wheel it was interfering with the setting wheel on the dial side as the teeth were not fully meshing and it wouldn't fully seat. If that isn't the issue I got nothing and am looking forward to see how you solve it 🙂
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Not sure, but just looking at it, it seems like the screw on the right may be a fake? The one on the left may not be a screw in the regular sense at all, rather a 2 position device, I think you need to point the slot towards either of the 2 dots and one will secure and one will open. Like I said this is just my best guess looking at the pictures.
×
×
  • Create New...