Are the center arbor and winding wheel screwed together and designed to be taken apart or are they riveted together or friction fit?

My recommendation, leave them alone, they only turn when the watch is wound anyway. Try to sneak some oil into the plate-side face of the arbor that faces the I.D. Plate.

Thanks David, I know I don't really need to disassemble this and will oil it after cleaning but I was just curious as to whether this was a factory "permanent" connection?
Mike

Mike, I thiunk it is meant as a permanent assembnly.

Michael i have had these apart a few times they thread apart .

Ok Dave & Samie, thanks, I figured Hamilton probably would make it to come apart. Now that I know, next time I can try turning with a bit more force.
Mike