Encyclopedia » Engine » Drive Belt Idler Pulley

Drive Belt Idler Pulley

Auto Systems and Repair

The drive belt idler pulley is a load carrying pulley with an internal bearing. Its purpose is to properly guide and position the drive belt.

Symptoms of Wear or Failure

  • Growling or grinding noise from drive belt area
  • Drive belt will not stay on

Related Repair Advice

  • The idler pulley should be inspected whenever the drive belt is replaced

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