Mercedes Belt Tensioner - Febi 2722000114

Belt tensioners are typically replaced at manufacturer's suggested service intervals and often at the same time the belt is replaced. An indication that you may need to replace your tensioner include any of the following:

1) There is play in the bearing
2) the tensioner is out of alignment
3) there is play in the belt because the spring in the tensioner is no longer keeping the belt tight.
4) the tensioner is squealing (because the bearings are bad)

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