Pic. 2.235. Checking the automatic drive belt tensioner: 1 - automatic drive belt tensioner
Check that the automatic drive belt tensioner moves smoothly in the operating direction (pic. 2.235).
If the tensioner does not move smoothly, replace it.
Turn the drive belt auto-tensioner pulley by hand and check that it rotates smoothly.
If the tensioner does not move smoothly, replace it.
Install the drive belt.