Generator & Regulator: Overhaul BMW 3 series E46

DIODE ASSEMBLY

1. Place ohmmeter on X100 scale. Connect ohmmeter leads, in turn, between B+ terminal and each of the 3 stator terminals. (Scheme 1) Reverse leads. Ohmmeter should indicate continuity in one direc tion only.
2. Connect ohmmeter leads, in turn, between negative plate and each of the 3 stator terminals. Reverse leads. Ohmmeter should indicate continuity in one direction only.
3. Connect ohmmeter leads, in turn, between D+ terminal and each of the 3 stator terminals. Reverse leads. Ohmmeter should indicate continuity in one direction only. Replace diode assembly if continuity is not as specified.

Scheme 1

OVERHAUL

For overhaul procedures, see appropriate illustration for exploded view of generator. (Scheme 2)or (Scheme 3).

Scheme 2

Scheme 3