electric motor question
 

I took my e-locker motor apart to clean it out and the 4 magnets in the steel cap came out and I was wondering if the magnets were supposed to be held inside the metal cap or are they supposed to just be free wheeling it against the contacts in the motor, because now when I apply power to the motor all it does is spin a little bit then the magnets spin together and it stops spinning. Any insight here?