I have a new one in my truck, I’ll get a part number for you.

 

Moving the idler up to relive belt tension (effectively lengthening the belt) then going to a shorter belt to add that tension back makes no sense. The purpose of the adjustable idler is to get the tensioner in its optimal range to manage belt deflection as it stretches with load.

 

Moving the fixed idler up increases tension.

 

What is the shortest path between two points? What happens to the belt route between the tensioner and sc when the idler moves up? Moving the idler up straightens the path allowing the tensioner to rotate ccw, reducing spring tension.

 

You’re right, I had a brain fart there. He still needs a shorter belt, I’ve been in his position before and that helped. HD tensioner fixed it for good though.

 

Soooo what should I do? Smaller belt or move the adjustable idler?