Rectifier Diode / Bridge: Testing and Inspection

1. Inspect the (+) heat sink by checking the continuity between the (+) heat sink and stator coil lead wire connection terminal using a tester. If there is a continuity at both, the diode is short circuited, so replace the rectifier.




2. Inspect the (-) heat sink by checking the continuity between the (-) heat sink and stator coil lead wire connection terminal using a tester.




3. Check the diode trio by connecting an multimeter to both ends of each diode and check the continuity of the three diodes. If there is continuity in both directions, or if there is no continuity the diode is damaged and the rectifier must be replaced.