GENERATOR INSPECTION


  1. INSPECT GENERATOR PULLEY WITH CLUTCH


    1. A01HQ5WE03
      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. A01HQ5J

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

      OK
      The bearing rotates smoothly.

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

  3. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A01HNFHE12
      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.

  4. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A01HQYS

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

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

    2. A01HONPE12
      Text in Illustration
      *1 Slip Ring
      *2 Ohmmeter

      Check the 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.

    3. A01HOO0E06
      Text in Illustration
      *1 Slip Ring
      *2 Ohmmeter
      *3 Rotor

      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 10 kΩ or higher

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

    4. Check the slip ring diameter.


      1. A01HO90E07
        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.