GENERATOR INSPECTION


  1. INSPECT GENERATOR CLUTCH PULLEY


    1. A01EV7LE03
      Text in Illustration
      *a Free
      *b Lock

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

      SST
      09820-63021

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

  2. INSPECT GENERATOR DRIVE END FRAME BEARING


    1. A01ET05

      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. A01EXHUE11
      Text in Illustration
      *a Length

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

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

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

  4. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A01ET14E02

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

      If necessary, replace the generator rotor assembly.

    2. A01ETZSE20
      Text in Illustration
      *1 Slip Ring
      *2 Ohmmeter

      Check the generator rotor for an open circuit.


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

        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.

    3. A01EUATE15
      Text in Illustration
      *1 Slip Ring
      *2 Rotor
      *3 Ohmmeter

      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. A01EYPTE07
      Text in Illustration
      *a Diameter

      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.