Riding Mower makes grinding noise when pushing in on the clutch / brake

I have a craftsman 14.5 HP ohv riding mower with a dana model number D4360-140 transaxle. It started making a grinding noise and small vibration, when pushing in on the clutch / brake or releasing it. Fully released there is no noise and fully depressed no noise. I looked a t sears parts center, no parts available on most items. I think this may be just the brake disk, brake puck spacers, or jaw brake. Am I right? or could it be something else?

Riding Mower makes grinding noise when pushing in on the clutch / brake