GENERATOR (for 100 A Type) INSPECTION


  1. INSPECT GENERATOR WITH CLUTCH PULLEY


    1. A01IQIDE05
      Text in Illustration
      *a Free
      *b Lock

      Hold the center of the generator with clutch pulley, and check that the outer ring turns counterclockwise and does not turn clockwise.

      OK
      The outer ring turns counterclockwise and does not turn clockwise.

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

  2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A01IMZGE16
      Text in Illustration
      *a 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 generator brush holder assembly.

  3. INSPECT GENERATOR ROTOR ASSEMBLY


    1. Check the generator rotor assembly for an open circuit.


      1. A01ISZKE03
        Text in Illustration
        *1 Slip Ring

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

        Standard Resistance
        Tester Connection Condition Specified Condition
        Slip ring - Slip ring 20°C (68°F) 1.8 to 2.2 Ω

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

    2. Check the generator rotor assembly for a short to ground.


      1. A01IPHBE04
        Text in Illustration
        *1 Slip Ring
        *2 Rotor Core

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

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

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

    3. Check each slip ring.


      1. Check that the slip rings are not rough or scored.

        If rough or scored, replace the generator rotor assembly.

      2. A01IQPUE09
        Text in Illustration
        *a Diameter

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

        Standard diameter
        14.2 to 14.8 mm (0.559 to 0.583 in.)
        Minimum diameter
        14.0 mm (0.551 in.)

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

    4. A01IO4I

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

      If the generator rotor bearing does not rotate smoothly, replace the generator rotor assembly.