washing machine, sounds like jackhammer

:confused: Hello.
My maytag washing machine makes a loud machine gun style noise when it get to the spin cycle, this is because the pulley for the washer is jumping up and down on the helix without spinning anything but the pulley. I know it needs brakes, 2 pads r missing, just found that out when i took it apart, and the brake rotor is loose, is that normal? Everything works up untill the spin cycle. i need some help our family of 8 is going to run out of clothes soon any help is appreciated. Thanks, Marty.