Overhaul
ALTERNATORDISASSEMBLY
1. If the front bearing needs replacing, remove the pulley (A) lock nut (C) with an impact wrench (B).
2. Remove the generator cover (A) after removing the three nuts (B).
3. Remove the brush holder (A).
4. Remove the four screws, the rectifier (B) and the rubber seal (C).
5. Remove the four nuts (A) and insulators (B).
6. Remove the rear bracket assembly (A) and washer (B).
7. Remove the rotor (A) from the stator and front frame assembly (B).
REASSEMBLY
NOTE: Be careful not to get any grease or oil on the slip rings.
1. Insert the rotor (A) in the stator and front frame assembly (B).
2. Install the washer (B) and the rear bracket assembly (A)
3. Tighten the four nuts (A) and insulators (B).
4. Install the rectifier (B) and the rubber seal (C) by tightening the four screws.
5. Install the brush holder (A).
6. Install the generator cover (A) by tightening the three nuts (B).
7. Install the pulley lock nut with an impact wrench.
INSPECTION
INSPECT ROTOR
1. Check that there is continuity between the slip rings (A). If there is no continuity, replace the generator.
STATOR
1. Check that there is continuity between each pair of leads (A). If there is no continuity, replace the generator.
RECTIFIER
1. Check for continuity in each direction, between the B terminal (A) and P terminals (B), between the E terminal (C) and P terminals (B) of each diode pair. All diodes should have continuity in only one direction. Because the rectifier diodes are designed to allow current to pass in one direction, and the rectifier is made up of eight diodes (four pairs), you must test each diode in both directions for continuity with an ohmmeter that has diode checking capability: a total of 16 checks. If any diode failed, replace the rectifier assembly.