I just got this Eternamatic Kontiki.
It wound fine and kept real good time if
left on the desk, but if I wore it, it would stop.
So I figured broken staff or something.
Planned on sending it out for service
next week. Figured I'd try to crack it open first
and look around. Got it open. Shot a little canned
air at movement and out pops this little piece( looks to
me it's a movement holder.) turned the watch upside down and
gently tapped. Out falls this screw. Is this just the movement
holder flange and screw? Should it be good to go if I just
screw it back in?
Or is there a washer for that screw that came out that I sould
be looking for?
I have jewelers screwdrivers here.
See picture of other side of movement where other flange is
still in place
No wonder it would stop.
I'm just a tinkerer, but this was fun finding this.

 

Casing clamp and screw. Let's just hope it hasn't damaged anything whilst it was resident in the movement.

 

Yep, you can see where the clamp is missing near the crown. It screw was probably jamming the balance wheel or something else that caused it to stop running.

 

Yup, as said before: case clamp and screw. You'll find the second one on the other side. Take a good close look and use it as your example to reinstall.

A pair of watchmaking tweezers will keep you from hating life, but if all you've got is screwdrivers and patience, give it a go.

You'll know soon enough whether there was any damage beyond superficial scratches to some of the movement parts.

 

Give you balance wheel a very gentle puff of air (hand puffer, just enough to move the wheel) to make sure it's running nicely and that the coil spring hasn't been damaged by the bits bouncing around inside the case.

 

Thanks for replies
It's all back together.
Hasn't stopped on the wrist since 3pm CST yesterday.
Running 50sec fast since that time.
Auto winder floats nicely.
Winding stem is stiff but winds.

 

I would advise against spraying canned air into a watch movement. Canned air can have enough force to damage balance springs...

Cheers, Al

 

Thanks for the tip. Will refrain from this in the future

 

But this stuff is ok, right?

 

Nooooooo! Cheese is not a lubricant - if you eat enough you will understand why.

 

Probably right - I have never had the pleasure (?) of eating cheese, or "cheese like substances" from a spray can, so I have no direct experience in that regard....