That will eat the belt in short order.

 

i just dont get why it keeps throwing the belt off the pulley though....

 

It shouldn't do that at all. When you put it on, make sure it is on all the pulleys nicely before you release the tensioner.

How does your tensioner feel? Is it nice and stiff, but, springy? (yeah, that sounded good......) if it feels sticky at all, replace it.

 

the tensioner feels ok, kinda hard to relieve pressure, but i think thats how its supposed to be isnt it?

 

I assume you cleaned the grooves in all the pulleys? Get the Dayco tensioner. I use Gates belts and never had a problem with squealing, so I don't know what the big deal is , to tell you the truth.

 

You have the wrong underdrive pulley on there for your model of truck.


Six groove underdrive pulley on a seven groove belt or vice versa.

That's why you are throwing the belt.

If the underdrive pulley is six groove, you can run a six rib belt on all the pulleys, but be sure to set it in the grooves closest to the block, meaning that the last groove nearest the radiator will be bare on all your pulleys, save the crank.

Reverse that if the crank is seven and the others are six, leave the last groove in the crank pulley bare.

 

dont have an underdrive crank pulley, wish i did. but they are all 7 groove pulleys.

 

That direction is not an issue, it's if it's free enough to apply tension in the opposite direction.

 

ok, so new update. installed my new dayco belt, and low and behold the belts jumps a rib ONLY on the crank pulley. could it be a bad tensioner, or idler, or what? this has me so stumped..... i need to get this new belt on!

 

Have a look from the side, and see if you have a pulley misalignment somewhere. It really shouldn't do that......