I recently purchased an early 4992B watch I am in the process of restoring. My question is if it was standard for the adjusted 6 positions stamp to have to be redone because they used 992b plates or if this was something only done with early ones. If someone has information on this, it would be appreciated. as you can see in the picture, the sweep second pinion plate and spring cover it up on this example.

Also, anyone have any suggestions on how to loosen the last frame screw on this? It got some moisture on the dial side in that area and is completely stuck. I have tried penetrating oil on it from the dial side (overnight) with no luck. also tried a little heat on it with no luck, but don't want to push it and tempure something that shouldn't be. I have broken the tip off the correct sized screwdriver twice and it still won't budge. I would have thought the screw would have broken off by now at a minimum, but no luck on that even...

Thanks,

Jared

quote:

Jared

Hi Jared,
YOU have one of the first first ones.less than !000 of this mod.Bu.Areo.US navy.Take
your time,trying to get screw out.There are several things you can do.Tap it with a
punch on top screw.I would use staking tool,right size punch
(size of screw)& good size stump on bottom.If don't move after a coulpe taps,soak it some
more.Don't hurry it,you can drill it out from bootom,boil it in alum as last resort.It is
the hardest 4992B to find.
Hub.

Kroil penetrating oil works the best for me, it has loosened screws in guns that haven't been removed in 150 years.

Talk to Chris Abell, he may have a suggestion. That Kroil stuff sonds interesting too.

A friend of mine swears by the Kroil Tom mentioned.

Try putting back the other plate screws and the case screw next to one stuck, and tighten them up and try to loosen the one that is stuck.

Kroil is the way to go.

I use Kroil on my guns quite a bit.. If you have a stuck screw, bolt or nut, spray Kroil on it... Let it sit for a bit, then turn or twist... You can buy it on the bay... It lasts a long time.. Don't need much