Bench Testing Alternator

The fast and easiest way to test an alternator with a drill a socket and multimeter this way by spinning will produce electricity and therefore test for its. How do i bench test an alternator. But if the unit tests good the problem is something else such as a bad voltage regulator pcm or wiring harness.

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With no battery in the circuit to act as a buffer the alternator can put out up to 150 volts depending on engine rpm.

Bench testing alternator. I assume you mean a small one like an auto alternator and this is a one shot deal first you need to drive it how about. Here s a video on how to properly and safely test your alternator. Bench testing an alternator on a test stand should verify whether or not its output is within specifications.

If the unit tests bad your customer needs a replacement alternator. When the smoke clears that simple test could end up costing you several thousand dollars for new electronics.

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