I am not sure how this would happen if the hub turns before you put the rotor on and then the caliper bracket and caliper it doesn't turn, then clearly one of these components are the issue. Just make sure the caliper bracket is installed on the correct side.
Maybe getting a video of what you are dealing with it will help pinpoint the issue. Are you able to remove something and get the hub to start spinning again? If so, what is this component?
Friday, October 11th, 2019 AT 1:21 PM