The white electric wire inside the motor unit snapped off when I was taking the unit down. How do I open the motor to reattach it. I can't tell whether it is threaded or not. At any rate, I have tried and tried to pry it off and am not getting anywhere.

I have a ceiling fan Model AC-552 with five blades and five lights. The white electric wire inside the motor unit snapped off when I was taking the unit down. How do I open the motor to reattach it? I can't tell whether it is threaded or not. I have tried and tried to pry it off and turn it off but am nowhere.