Diesel Data: Automotive Repair

Drive Belt Tensioner: Testing and Inspection



Drive Belt Tensioner Diagnosis

Inspection Procedure

Notice: Allowing the drive belt tensioner to snap into the free position may result in damage to the tensioner.

1. Remove the drive belts. Refer to Drive Belt Replacement (Service and Repair).
2. Position a hex-head socket on the belt tensioner pulley bolt head.
3. Move the drive belt tensioner through it's full travel.

* The movement should feel smooth.
* There should be no binding.
* The tensioner should return freely.

4. If any binding is observed, replace the tensioner. Refer to Drive Belt Tensioner Replacement (Service and Repair).
5. Install the drive belt. Refer to Drive Belt Replacement (Service and Repair).