Thank You lonestarwelder and 63boxtop:
Your replies are very informative, nevert thought of getting a new pulley, I guess that these wear out. As to the use of a buddy, it is great advise. Saw on Youtube that this fellow used a ViseGrip to hold tension, may work or may not.
Does not seem that difficult to do, but with the schematic it makes everything easier as it is almos impossible to take a picture of the setup unless one removes the radiator for space.
Thanks. I hope that this thread will be informative to others, as I did not find one in this forum that adresses this serpentine belt maintenance process.
2010 6.7L 2WD
Almost completely stock.
Dropped useless engine and exhaust parts on bumpy road.