replace chain switch on fan motor
 

I have a large Patton fan and the pull chain switch used to select
on-off-high-low needs to be replaced. I've removed the long screws
that hold the front and back covers on the motor and these covers now
freely rotate on the fan shaft but I can't remove them to get access
to the switch. What's the trick to get the end cover off of the motor?

TIA


John Keith