A tensioner comprising a base, a shaft connected to the base, an eccentric adjuster coaxially engaged with the shaft, an arm pivotally engaged with the shaft, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the arm comprising a first receiving portion and a second receiving portion disposed axially opposite from the first receiving portion, a first damping member disposed between the arm and the base, the first damping member frictionally engaged with the base and engaged with first receiving portion, a second damping member disposed between the arm and the eccentric adjuster having a member engaged with the second receiving portion, and a biasing member disposed between the first damping member and the arm for applying a normal force to the first damping member and to the second damping member.
1. A tensioner comprising:
a base;
a shaft connected to the base;
an eccentric adjuster engaged with the shaft;
an arm pivotally engaged with the shaft;
a pulley journalled to the arm;
a torsion spring engaged between the arm and the base;
a first damping member and a second damping member cooperatively connected to each other so as to allow a relative axial movement between them;
a compressible member disposed between and urging apart the first damping member and the second damping member; and
the first damping member and the second damping member disposed between the base and the arm.
2. The tensioner as in claim 1 , wherein the compressible member comprising an o-ring.
3. The tensioner as in claim 1 , wherein the first damping member and the second damping member are not rotationally fixed to the base or the arm.
4. The tensioner as in claim 1 further comprising:
a retainer attached to the eccentric adjuster; and
the retainer lockingly engaging a groove in the shaft.
5. The tensioner as in claim 4 , wherein the retainer comprises a resilient tab.
6. The tensioner as in claim 5 , wherein the eccentric adjuster comprises a receiving portion for receiving the resilient tab.