Ford Focus Forum, Ford Focus ST Forum, Ford Focus RS Forum - View Single Post - New T-Belt Tensioner Failure... :(
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Old 04-21-2013, 09:16 AM   #49
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Originally Posted by iminhell View Post
guess the fact it's an 'auto tensioner' is lost on some ...
It is an auto *range* tensioner. Once it is set at the correct range, when installed correctly, tension is set by rotating the tension mechanism and an internal spring should keep between a min and max range. After it's set it should NEVER go outside of that range faster than the belt stretch would allow it to do.

What we're talking about is new tensioners going far beyond the max slack limit shortly after correct installation, thus not maintaining correct tension.
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