Pinpoint Test F: The Generator Is Noisy
- 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
for diagnosis and testing of the accessory drive system. TEST the system for normal operation.
- 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. TEST the system for normal operation.
- 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?