I rebuilt this PTO about a month ago. Owners son was grinding bales and slugged the grinder killing the 1070. Son restarted the tractor, revved it open and threw the PTO in gear. It did not kill the engine right away, well not until the clutch pack had welded the plates together from slipping and getting very hot. Then of course the pack was going to turn when ever the engine was running even though the PTO was off. The new brake unit. could not hold the drum even though it tried and that fried the brake. Lesson learned by son and Pops was not happy, clear slug from machine first and then restart PTO. Rod.