SF 240 Keywind help

[mountaineer]

I recently purchased a keywind sf240. I cannot unscrew the knob that moves the hands.

I unscrew counterclockwise and screw loosens but doesn’t pull out. I do not want to hurt the movement.

What is the trick here?

[mountaineer]

I figured it out. Had to hold the knob still while removing screw.

Two broken teeth on the ratchet wheel. Is this a big deal? Is there any other movements that have the same size wheel?

Now I just need to figure out what to do with the movement. I bought it for a low price.

-Might keep it for spare parts.

-Though about servicing, shorten pivots, putting in a case and winding with a key.

-stem conversion

Let me if you have any suggestions.

[Belkin12]

Hamilton 917/921 ratchet wheel should fit just fine. Or even Unitas 6497/98 one, but I have to check first.

[Yoda]

Hamilton 917/921 ratchet wheel should fit just fine. Or even Unitas 6497/98 one, but I have to check first.

Yes, Madantique has done that a while ago.

[Yoda]

I figured it out. Had to hold the knob still while removing screw.

Two broken teeth on the ratchet wheel. Is this a big deal? Is there any other movements that have the same size wheel?

Now I just need to figure out what to do with the movement. I bought it for a low price.

-Might keep it for spare parts.

-Though about servicing, shorten pivots, putting in a case and winding with a key.

-stem conversion

Let me if you have any suggestions.

You are looking at around $800 for a full conversion.