Drive Belt Tensioner: Testing and Inspection

1. Check the position of the auto-tensioner indicator's pointer, start the engine, then check the position of the pointer again. If the position changes, go to step 5.
2. Check for abnormal noise from the pensioner pulley. If you hear abnormal noise, replace the tensioner pulley.
3. Stop the engine, then remove the alternator belt.




4. Check if the auto-tensioner moves smoothly and for abnormal noise when the pulley is turned Counterclockwise with the designated tool. If the auto-tensioner does not move smoothly or if the there is abnormal noise, Replace the auto-tensioner.

NOTE: Do not move the auto-tensioner beyond its limit.




5. Remove the auto-tensioner..




6. Clamp the auto-tensioner in a vise as shown.

NOTE: Do not clamp the auto-tensioner itself.




7. Attach a torque wrench to the pulley bolt. Measure the torque when the tensioner is turned counterclockwise. If the torque is less than specified value. replace the auto tensioner.




8. If necessary. Remove the pulley bolt. and replace the tensioner pulley.