Pinpoint Test 6: The Generator Is Noisy
PINPOINT TEST 6: THE GENERATOR IS NOISY
Normal Operation
The generator is belt-driven by the engine accessory drive system. There are 2 sources of generator noise: bearing noise and electrical fault noise. A generator with certain types of diode or stator failures may also produce an audible noise.
Possible Causes
- Accessory drive belt
- Loose bolts/brackets
- Generator/pulley
Diagnostic Procedure
