1970 window openers

A home owner from Ocala, Fl says:
Original to 1970 house I believe. Crank handle is loose inside unit and will not screw back in, just loose. Windows don't open.
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Bob from SWISCO responded:

Without seeing the operator out of the window with the hole pattern on the top and bottom tabs clearly displayed, I am afraid I can't say what you need. It might be the 39-054 , but you'll need to compare the dimensions to confirm. 

How to Replace an Awning Window Operator [1080p]
How to Replace an Awning Window Operator [1080p]
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