39-114L handle coming loose

A quick learner from Philadelphia, PA 19128 says:
We have a window the this kind of handle with a set screw in it. When I crank to window open (turn to the left) it works fine. However, when I crank it to the right to close the window it unwinds and come all apart in my hand. Thank you.
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Paul from SWISCO responded:
It sounds like your operator is broken. That worm gear you describe is not meant to come out and it means that the gears have been stripped out. Since it's machine-pressed in at the factory, there is no repairing it. We can help you replace the operator, but we will need to see pictures of it removed from the window.
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