Alternator - Models W/Integral Regulator: Overhaul: Inspection

Wash all metal parts except bearings, stator and rotor. Inspect rotor slip rings. They may be cleaned with 400 grit or finer polishing cloth, while rotor is being rotated. Slip rings may be lathe turned to .002" (.05 mm) maximum indicator reading.

Slip rings are not replaceable. Excessive damage will require rotor replacement. Inspect brushes for wear, replacing them if more than 50% worn.

Fig 1: Exploded View of Model 12SI Alternator

Courtesy of GENERAL MOTORS CORP.

Fig 2: Exploded View of Model 17SI Alternator

Courtesy of GENERAL MOTORS CORP.