What dark magic is this? shellac outline on jewel of AS 1701 pallet cock

[TimpanogosSlim]

Discovered during inspection prior to installation. As though a small spacer used to be affixed here. If it existed when i disassembled the movement, I never saw it, and that was weeks ago. 

[TimpanogosSlim]

With a sense of doom, I note that the JB database lists two different "pallet fork and arbor" parts for the 1700 series, both of them discontinued. 

without having the proper vocabulary, maybe this is a replacement pallet fork that has too much vertical movement when attached to the main plate? 

There isn't a lot of meat to the pallet cock so lowering the jewel slightly with my staking set sounds very sketchy. 

 

[JohnR725]

If you scrape it off with the bridge back on what effect does it have to the pallet fork?  One of the problems with vintage lubrication is they can harden up with time and that's what it might be.

5 hours ago, TimpanogosSlim said:

There isn't a lot of meat to the pallet cock so lowering the jewel slightly with my staking set sounds very sketchy.

First you have to make sure you actually have a problem. Before repairing changing modifying anything you need to make sure that you really have to do this. Put the pallet fork back in Check out the watch see if it works see if you for problem.

You can also adjust the jewel in the main plate if there really was a problem. Or if you really need a new pallet fork which is not available you to get a new pallet Arbor and just change that. But I would check it out and see how it works first

[TimpanogosSlim]

7 hours ago, JohnR725 said:

If you scrape it off with the bridge back on what effect does it have to the pallet fork?  One of the problems with vintage lubrication is they can harden up with time and that's what it might be.

First you have to make sure you actually have a problem. Before repairing changing modifying anything you need to make sure that you really have to do this. Put the pallet fork back in Check out the watch see if it works see if you for problem.

You can also adjust the jewel in the main plate if there really was a problem. Or if you really need a new pallet fork which is not available you to get a new pallet Arbor and just change that. But I would check it out and see how it works first

Yeah i have reassembled everything but the automatic winding works and it runs, but has stopped a couple times. 

I removed the shellac from the pallet cock by pegging while immersed in alcohol. 

I will probably partially disassemble it for further cleaning. The canon pinion fits really tight, and the date indicator unlocking yoke, a 3-part riveted assembly, was not mobile until i over-oiled it and then mopped it up a bit with rodico. So i wonder if there is still some varnish of something on the center wheel or the inside of the canon pinion. 

This watch had water ingress from the stem with resulting almost-rusted-through stem and some rusty screws and staining. Also four or five servicing marks on the inside of the caseback. 

[TimpanogosSlim]

ok, i removed the train of wheels, canon pinion, hour wheel, and most of the calendar works and subjected them to an ammoniated detergent, water rinse, 99% ipa, heated drying, final rinse vm&p naphtha, and another heated drying stage. 

Then whittled down a bamboo toothpick until i could use it to peg the interior of the canon pinion with some one-dip.

Also put the cog end of the center wheel into a hole in an anvil and pressed a one-dip soaked softer pegwood against the pivot body while rotating it. 

Then noted that the datasheet from AS specifies fine oil for all of that, and i had used D5 for some of it, so cleaned the main plate and the center wheel bridge and re-lubed everything with 9010 during reassembly. 

I no longer have an excessively stiff setting action so i guess i cleaned off whatever was causing the problem. i'll see if it runs without stopping now. 

[TimpanogosSlim]

Had a little more bench time with this one today. 

Whatever this was lubricated with last has amazing staying power. here's the pawls of the winding wheels after spending a lot of time in naphtha in the ultrasonic: 

 

detail: 

 

So these got the ammoniated detergent process and etc. 

 

I do think that's a crack, but I'm not convinced that it's a problem. 

 

The oil chart from AS has these marked "very liquid oil" which i guess will end up being 9010 by default. 

[xyzzy]

Looks like the plating is wearing off.

 

[TimpanogosSlim]

Progress update - this movement runs like a champ dial-down sitting in a plastic box. 

On the wrist is another story. 

When it comes to the top of the list again i will measure the existing pallet arbor. Or maybe i will just order one - there is a seller on ebay who will send me one for $5.