Econoline E150 1/2 Ton V6-4.2L VIN 2 (1998)
Drive Belt Tensioner: Description and Operation
The drive belt tensioner will maintain correct belt tension if the correct length drive belt is on the engine. To verify that the drive belt tensioner is
working properly, check to see that the belt length indicator mark on the drive belt tensioner is between the minimum and maximum marks. Remove the
drive belt and rotate the tensioner from stop to stop to verify that the tensioner does not stick, grab or bind. If the tensioner exhibits any of these
conditions, replace the tensioner.
