GENERATOR INSPECTION


  1. INSPECT GENERATOR CLUTCH PULLEY


    1. A011B6GE02
      Text in Illustration
      *1 Free
      *2 Lock

      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 BRUSH HOLDER ASSEMBLY


    1. A0117UHE02
      Text in Illustration
      *1 Length

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

      Standard exposed length
      9.5 to 11.5 mm (0.374 to 0.453 in.)
      Minimum exposed length
      4.5 mm (0.177 in.)

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

  3. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A011AKKE22
      Text in Illustration
      *1 Ohmmeter
      *2 Slip Ring

      Check the generator rotor for an open circuit.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        Slip ring - Slip ring Approx. 20°C (68°F) 2.3 to 2.7 Ω

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

    2. A011A4WE17
      Text in Illustration
      *1 Ohmmeter
      *2 Slip Ring
      *3 Rotor

      Check the rotor for a short to ground.


      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance
        Tester Connection Condition Specified Condition
        Slip ring - Rotor Always 10 MΩ or higher

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

    3. A01180Y

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

      If necessary, replace the generator rotor assembly.

    4. A0119YGE02
      Text in Illustration
      *1 Diameter

      Using a vernier caliper, 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.)

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

  4. INSPECT GENERATOR DRIVE END FRAME BEARING


    1. A011BKD

      Check that the bearing is not rough or worn.

      If necessary, replace the generator drive end frame bearing.