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Home >> Cadillac >> 2008 >> Escalade RWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 4.8L, 5.3L, 6.0L Or 6.2L (1 Of 5) >> Diagnostic Information and Procedures >> Drive Belt Tensioner Diagnosis

Drive Belt Tensioner Diagnosis

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