Timing Belt Tensioner: Testing and Inspection

Auto-Tensioner Inspection
1. Remove the auto-tensioner.

NOTE: Do not apply force to the tensioner pulley.

2. Put the auto-tensioner on a surface plate.





3. Measure the height at point A (A) and point B (B).
4. Calculate the difference in height between point A and point B. If the difference in height is out of tolerance, replace the auto-tensioner.
Difference in height:
Specification: 0.75 mm (0.030 inch)





5. Inspect the spring grommet (A). Replace the grommet if it is damaged or deteriorated.