First, the belt will need to be replaced because the squealing has ruined it.
The long term fix with new belt in hand is to remove the Glazing on all the pulleys before putting on the new belt.
The original squealing caused this glazing and it will just continue squealing even with a new belt, and ruin that belt.
To remove the glazing use scotchbrite pad or wire brush on all the pulleys, idler and tensioner as well.
You want a rough surface for the belt to ride on, this is a friction driven system.
squealing = lack of friction
Last edited by RonD; 05-15-2014 at 12:18 PM.