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Pinpoint Test F: The Generator Is Noisy

  1. F1 CHECK FOR ACCESSORY DRIVE BELT NOISE AND LOOSE MOUNTING BRACKETS 

    Ignition OFF.

    Check the accessory drive belt and tensioner for damage and correct installation. REFER to ACCESSORY DRIVE .

    Check the accessory mounting brackets and generator pulley for looseness or misalignment.

    Is the accessory drive OK? 

    • Yes  : GO to F2  .
    • No  : REPAIR as necessary. REFER to ACCESSORY DRIVE .
  2. F2 CHECK THE GENERATOR MOUNTING 

    Check the generator mounting for loose bolts or misalignment.

    Is the generator mounted correctly? 

    • Yes  : GO to F3  .
    • No  : REPAIR as necessary.
  3. F3 CHECK THE GENERATOR FOR NOISE 

    With the engine running, use a stethoscope or equivalent listening device to probe the generator and the accessory drive area for unusual mechanical noise.

    Is the generator the noise source? 

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