GENERATOR > INSPECTION |
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1. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY |
Using vernier calipers, measure the exposed brush length.
- Standard exposed brush length:
- 10.5 mm (0.413 in.)
- Minimum exposed brush length:
- 4.5 mm (0.177 in.)
2. INSPECT GENERATOR ROTOR ASSEMBLY |
Check the rotor for an open circuit.
Using an ohmmeter, measure the resistance between the slip rings.
- Standard:
- 2.3 to 2.7Ω at 20°C(68°F)
Check the rotor for ground.
Using an ohmmeter, measure the resistance between the slip ring and rotor.
- Standard:
- 10 kΩ or higher
Inspect the slip rings.
Check that the slip rings are not rough or scored. If rough or scored, replace the rotor.
Using vernier calipers, measure the 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.)
3. INSPECT GENERATOR ROTOR BEARING |
Check the bearing whether it is rough or worn. If necessary, replace the generator rotor.