Garbage Disposal not working- motor/ axis spins, but blades do not turn.? When the switch is on, the axis turns with a loud thud,...
When the switch is on, the axis turns with a loud thud, but the blades are not turning. When testing for a preserve, the allen wrench turns freely. Is there a coupling problem?
Answers: Yep. This sounds similar to a coupling problem to me. How old is you disposer?? It might be time for a unknown one.
The answer to your inquiry would be somewhat easier to answer if the size and brand of the disposal was specified.