INSPECT GENERATOR WITH CLUTCH PULLEY
Rotate the pulley and check that it turns counterclockwise and it does not turn clockwise.
INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
Using vernier calipers, measure the brush length.
| Standard length |
|---|
| 10.5 mm (0.413 in.) |
| Minimum length |
|---|
| 4.5 mm (0.177 in.) |
If the length is less than the minimum, replace the brush holder assembly.
INSPECT GENERATOR ROTOR ASSEMBLY
Inspect that the bearing is not rough or worn.
If necessary, replace the rotor.
Check the rotor for open circuit.
Using an ohmmeter, measure the resistance between the slip rings.
| Standard resistance |
|---|
| 2.3 to 2.7 Ω at 20°C (68°F) |
If the resistance is not within the standard range, replace the rotor.
Check the rotor for ground.
Using an ohmmeter, measure the resistance between the slip ring and rotor.
| Standard resistance |
|---|
| 10 kΩ or higher |
If the result is not as specified, replace the rotor.
Using vernier calipers, measure each slip ring diameter.
| Standard diameter |
|---|
| 14.2 to 14.4 mm (0.559 to 0.567 in.) |
| Minimum diameter |
|---|
| 14.0 mm (0.551 in.) |
If either diameter is less than the minimum, replace the rotor.