INSPECT GENERATOR WITH CLUTCH PULLEY
| *a | Free |
| *b | Lock |
Rotate the pulley and check that it turns clockwise and it does not turn counterclockwise.
INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
| *a | Length |
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.
CHECK GENERATOR ROTOR ASSEMBLY
Check that the bearing is not rough or worn.
If necessary, replace the rotor.
| *1 | Slip Rings |
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.
| *1 | Rotor |
| *2 | Slip Rings |
Check the rotor for short circuits.
Using an ohmmeter, check 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.