GENERATOR INSPECTION


  1. INSPECT GENERATOR CLUTCH PULLEY


    1. A01CFU2E01

      Hold the center of the pulley, and confirm that the outer ring turns counterclockwise and does not turn clockwise.

      If the result is not as specified, replace the clutch pulley.

  2. INSPECT GENERATOR DRIVE END FRAME BEARING


    1. A01CFBH

      Check that the bearing is not rough or worn.

      OK
      The bearing rotates smoothly.

      If the bearing does not rotate smoothly, replace the bearing.

  3. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A01CFBUE01

      Using a vernier caliper, measure the length of the exposed brushes.

      Standard exposed length
      9.5 to 11.5 mm (0.375 to 0.452 in.)
      Minimum exposed length
      4.5 mm (0.178 in.)

      If the exposed length is less than the minimum, replace the brush holder assembly.

  4. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A01CEM9E02

      Check that the generator rotor bearing is not rough or worn.

      If necessary, replace the generator rotor assembly.

    2. A01CEMLE18

      Check the generator rotor for an open circuit.


      1. Using an ohmmeter, measure the resistance between the slip rings.

        Standard Resistance
        Condition Specified Condition
        Approx. 20°C (68°F) 1.5 to 1.9 Ω

        If the result is not as specified, replace the generator rotor assembly.

    3. A01CE1KE01

      Check the rotor for a short to ground.


      1. Using an ohmmeter, measure the resistance between the slip ring and rotor.

        Standard Resistance
        Tester Condition Specified Condition
        Slip ring - Rotor 1 MΩ or higher

        If the result is not as specified, replace the generator rotor assembly.

    4. A01CEP9E01

      Using a vernier caliper, measure the slip ring diameter.

      Standard diameter
      14.2 to 14.4 mm (0.560 to 0.566 in.)
      Minimum diameter
      14.0 mm (0.552 in.)

      If the diameter is less than the minimum, replace the generator rotor assembly.