bingo...but out of curiosity what size is the belt they gave you?

 

Call them to make sure you have the right size. Also to tighten it properly you need to just snug the pivot bolt tight enough that its not possible to move by hand so when you put the breaker to it and tighten it does'nt slip back I use 1/2 in. As my deflection measure works everytime. Remember to tight will burn bearings. Also hold pressure on the bar while tightening it.

 

I will check when i get back from vaca on the belt size. I dont remember seeing a pivot bolt anywhere on this tensioner; thats how I did it on my last truck but this one has an automatic tensioner.

 

So checked and they sold right belt, but the squeal was still there. Tried another belt and still squeal. Finally ordered a Goodyear gatorback belt and the squeal is gone. I think when I changed the alternator the pulley is slightly smaller on the 130amp alternator (which fixes the belt slip at high rpm's); in turn the Gatorback belt is about 3/4 in shorter and tightened up the belt.