GENERATOR INSPECTION


  1. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A019P6JE09
      Text in Illustration
      *a Length

      Using a vernier caliper, measure the brush length.

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

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

  2. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A019JNNE10
      Text in Illustration
      *1 Slip Ring

      Check the rotor for an open circuit.


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

        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.

    2. A019NNPE09
      Text in Illustration
      *1 Slip Ring
      *2 Rotor Core

      Check if the rotor is grounded.


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

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

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

    3. Check the slip ring diameter.


      1. A019OT9E06
        Text in Illustration
        *a Diameter

        Using a vernier caliper, measure the diameter of each slip ring.

        Standard diameter
        14.2 to 14.4 mm (0.559 to 0.567 in.)
        Minimum diameter
        14 mm (0.551 in.)

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

    4. Check the appearance.


      1. A019PKD

        Check that the bearing is not rough or worn and that it rotates smoothly.

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

  3. INSPECT GENERATOR DRIVE END FRAME BEARING


    1. A019NQL

      Check that the bearing is not rough or worn and that it rotates smoothly.

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

  4. INSPECT GENERATOR PULLEY WITH CLUTCH


    1. A019O8XE04
      Text in Illustration
      *a Free
      *b Lock

      Hold the generator rotor using SST, and turn the clutch pulley clockwise to check that the outer ring locks.

      SST
      09820-63021

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