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Drive Belt Rumbling Diagnosis

Drive Belt Rumbling Diagnosis

Step Action Yes No
DEFINITION:
  • A low pitch tapping noise caused by drive belt misalignment.
  • This noise occurs on cold start-up at idle.
  • A low frequency noise heard once per revolution of the drive belt.
1 Check for severe pilling.
Is there severe pilling of more than 1/3 of the rib depth?		 Go to Step 2  System OK
2 Clean the drive belt pulleys.
Is the repair complete?		 System OK Go to Step 3 
3 Install a new drive belt. Refer to Drive Belt Replacement .
Is the repair complete?		 System OK -
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