Generator Output
- Ensure connections at battery and generator are clean and tight. Ensure generator, engine and body are properly grounded. Ensure generator drive belt is properly adjusted and in good condition.
- Connect load tester/ammeter as per tester manufacturer's instructions. Connect voltmeter leads to battery terminals. See Fig 1
. Start engine and run at 2500 RPM. Adjust load tester to obtain maximum generator output. DO NOT allow voltage to drop to less than 12.7 volts.
- Maximum generator output should be within a few amps of generator rated output stamped on generator. If output is not within a few amps of generator rated output, check generator diodes. See DIODE TEST
. Replace generator as necessary.
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.