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Go to auto zone and get the $16 dayco tensioner pulley and replace that too. You're going to need a buddy and a 1/2" drive long rachet.
The routing is the exact same as the 3rd gen.
My best advise is to take the tension off the belt and slip the belt off of the alternator first.
You must install the rachet to the belt tensioner from the bottom and passenger side of the truck. The hardest part is slipping the belt through the gap to get it off/on the harmonic balancer.
The tensioner has to come off in order to get the belt off/on as well. It's a 13mm bolt head, use a 3/8" drive rachet and shallow socket, or ratcheting wrench, it's kind of tight in there.
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.
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