B7500 HST about 1400 hours - when I was grading my road I went around a corner and I heard a big clang and the motor stopped but started back up again but the rear tires seemed locked so I jacked it up and then they were free wheeling. When I drive down the gravel road the ride seems different like the wheels are not rolling smooth. I have had issues with the rear hubs and shearing the pin in the back many times.
I agree the hubs are worn out and will need to be replaced including the bolts and wedges in the hub