the cover, the handle, and the locking arm for a Jeld Wen wood casement

Thanks for writing in! I believe you may be able to use the 39-107 or the 39-107FK to replace your existing cover. Should you choose to use the 39-107, you would also need to purchase either the 39-114L Crank Handle or the 39-205 Truth Folding Crank handle. 

To confirm if these parts would be a fit for your operator, you'll need to compare the dimensions below. Both operator covers and handles have the same width and spline dimensions, respectively.

View with measurements.

Alternate view of the gear hole

To identify the replacement casement locking arm you need, I'll need to see a photo of the other compatible components, removed from the window. We have a few that could potentially work, but to narrow them down we'll need to see the details.