High-offset belt tensioner with a non-rotatable pulley bolt or bolt system

A high-offset belt tensioner comprising:

• an end plate having a bore therethrough;
• a pivot tube having a first end fixed in the bore of the end plate and having a second end comprising an annular cup;
• an arm seated over the annular cup of the pivot tube for rotation relative thereto and having a pully mount defining a pully rotation axis offset axially from the pivot tube;
• and
• a flat wire torsion spring having an inner spring hook attached to the pivot tube and an outer spring hook attached to the arm, wherein the flat wire torsion spring biases the arm in a belt engaging direction and applies a spring force acting on the arm in a second plane;
• and
• a spring cover having an annular main body with a radially inward flange at a first end thereof and an open second end opposite the radially inward flange, wherein the open second end faces the end plate and the flat wire spring is seated in the spring cover with the outer spring hook seated in a slot defined by the annular main body of the spring cover.