Cleaning & Inspection
- Rotor, stator and bearing must not be cleaned with solvent. Clean these components with a clean cloth. Clean remaining components with clean solvent. Inspect bearings for signs of lubricant loss and signs of roughness.
- Inspect rotor shaft bearing area for signs of bearing movement. Inspect all soldered connections on rotor and stator for looseness. Inspect rotor and stator for signs of burned insulation.
- Inspect rotor slip rings for nicks or roughness. Rotor slip rings can be turned down to remove nicks or roughness. Rotor slip rings must not be turned smaller than specification. See ALTERNATOR SPECIFICATIONS table.
- Check pulley and fan for excessive looseness or cracks on rotor shaft. Check front and rear housings for cracks in webbed areas at mounting ear.
- Check brush length. Replace brushes if worn less than .250" (6.35 mm). Replace all damaged components.
CAUTION:
Use only high-temperature bearings when rebuilding alternator. Standard bearings will result in alternator failure.