Can I take an old LEGO winch apart? I have an old LEGO winch that looks like #73037



It has been "restrung" but it is very stiff and it looks like it has some of the old string stuck between the rotating and non-rotating parts. It also feels a bit gritty so there might be dirt stuck in there.

It looks like the top on each side might come off and if so I would be able to remove the stuck string and clean it.

Does anyone have any advice about taking it apart without damaging it?
You just can't. This part is fused together with sound-waves so it doesn't separate anymore.

Source and more info: fusing Lego together