3-29. ALTERNATOR REPAIR (CONT)
Using multimeter, check continuity from terminal A to C on stator. Reading should be 0.
Using multimeter, check continuity from terminal B to C. Reading should be 0.
Readings other than infinity indicate grounded windings. Replace stator if test indicates grounded windings.
Using multimeter, check continuity from A, B, and C to lamination. Readings should be infinity.
Inspect stator for possible discoloration in small areas indicating hot spots.
Inspect fan for cracks or broken fins. Check condition of mounting hole.
Check for wear on pulley drive surfaces, woodruff key groove, and bearing bore.
Inspect front housing for damaged threads, cracks, obvious bearing wear, and mounting bore wear.
Using multimeter, place one test lead on rotor body and the other test lead on either slip ring. Reading should be
Inspect rotor for stripped threads on shaft, worn key slot, worn bearing surface, or scuffed pole fingers.
Replace rotor if it fails test or parts are worn.
Clean brush contacting surfaces with emery cloth. Wipe dust and residue away.
26 Clean front and rear housings.