Make sure the battery is fully charged.
Make sure that the deflection and tension of the alternator belt correspond to the nominal values.
Turn off all electrical consumers.
Turn the ignition switch to position «START» and check that the alternator rotates evenly and does not make any noise while the engine is running.
Pic. 7.8. Generator connector
Measure the voltage between the generator terminals (see fig. 7.8) at idle (at 20°C) according to table 7.2.