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Pinpoint Test 6: The Generator Is Noisy
PINPOINT TEST 6: THE GENERATOR IS NOISYNormal OperationThe 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
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Loose bolts/brackets
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Generator/pulley
Diagnostic ProcedureStep 1-Step 3:
