Diode Assemblies
Test diodes with a suitable alternator tester (EFAW 192) before dismantling slip ring end frame further.
CAUTION:
Do not lay positive diode carrier on housing or false reading will be obtained.
Disconnect conductor from "D +" to the exciter diodes at the exciter diodes heat sink. Unscrew spring and brush holder and remove from alternator. Unsolder stator lead and negative diode connections. Unscrew exciter diodes heat sink and remove together with positive diodes heat sink.
NOTE:
Before further testing, lightly clean all components in gasoline or trichlorethylene, but do not soak.