Noisy electric motor

by Jim Thomson
(Spokane Wa)

How can I repair ( Quiet) the clock motor on this Pam advertising clock, which I am guessing may have been made in the 50's. It keeps good time and works well, but has become very noisy. I took the clock carefully apart, but did not see a good way to disassemble the electric motor, as it looked like it was assembled with brads instead of screws. I reassembled the clock until I could find out more information.