Drive Belt Tensioner Diagnosis
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Drive Belt Tensioner Diagnosis
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Step
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Action
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Yes
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No
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1
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2.
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Inspect the drive belt tensioner pulley.
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Is the drive belt tensioner pulley loose or misaligned?
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Go to
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Go to
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2
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Rotate the drive belt tensioner.
Does the tensioner rotate without any unusual resistance or binding?
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Go to
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Go to
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3
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1.
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Use a torque wrench in order to measure the torque required to move the tensioner off of the stop.
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2.
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Use a torque wrench on a known good tensioner in order to measure the torque required to move the tensioner off of the stop.
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Is the first torque reading within 10 percent of the second torque reading?
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System OK
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Go to
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4
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Replace the drive belt tensioner. Refer to
Drive Belt Tensioner Replacement
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Is the repair complete?
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System OK
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-
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