Omega 40.6 L.t2

[Chainstay]

I'm in the process of servicing an old pocket-watch, a 40.6 L.T2 movement from ca. 1935. It's not expensive at all and it has no special affection value to me but I really would like to see a reasonably working watch afterwards.

The movement is now disassembled and cleaned. I think it is in a rather good condition and it worked when I got it.

 

A timegrapher picture before disassembly:

 

 

As you can see it runs way too fast and there's considerable beat error. I hope its mainly because of not being serviced for a long time (it was really dirty with black crusts of dried oil).

 

Next move is re-assembly and lubrication (and de-magnitizing). The balance has been removed attached to the balance cock (I didn't mess with the hairspring).

 

Now my question:

 

Can I re-assemble the movement and test it in the timegrapher without having to case it? That would of course be very convenient as I expect further adjustment might be needed. Is a special holder necessary?

 

Any suggestions are welcome.

 

Pauli

[Geo]

If you are holding it in a metal movement holder, it should work just fine. I have done this with small cocktail movements that are too small to be held normally.

[clockboy]

If you are holding it in a metal movement holder, it should work just fine. I have done this with small cocktail movements that are too small to be held normally.

Good idea geo will try that one.

[Chainstay]

I'll give it a try!

 

BTW there was no dial washer in this movement - is it normal or should I presume it's missing?