Caradco operator

I'm afraid we'll need more information. If you want to replace your crank, we'll need to see pictures of it removed from the window. If that's not possible, we would at least need to see it with the window open so that we can see as much the mechanism as possible.

Before you do all that, though, there are a few things I'd like you to try. First, disconnect the operator from the sash and try to open and close the window manually. If it works fine, then the operator will need to be replaced, yes. However, you may find that it still binds, in which case the operator is totally fine. Check the tracks and hinge for any debris or obstructions.

Thanks for getting back to us. Based on these pictures, I recommend our 39-156 and 39-155 casement window operators. Just make sure that the dimensions match up to your own measurements.

You only need to replace the operators that are damaged. If you have some that are still in working condition there is no reason to replace them.