GENERATOR INSPECTION

PROCEDURE


  1. INSPECT GENERATOR WITH CLUTCH PULLEY


    1. A01XDNA

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

      Text in Illustration
      B001CHY Free
      B001DEF Lock

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

  2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A01XE4YE01
      Text in Illustration
      *a Length

      Using a vernier caliper, measure the exposed brush length.

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

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

  3. INSPECT GENERATOR ROTOR ASSEMBLY


    1. A01XFIA

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

      If necessary, replace the generator rotor assembly.

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


      1. A01XFOPE02
        Text in Illustration
        *a 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.

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


      1. A01XH3GE04
        Text in Illustration
        *a Slip Ring
        *b 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.

    4. Check each slip ring.


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

        If the slip rings are rough or scored, replace the generator rotor assembly.

      2. A01XFIZE01
        Text in Illustration
        *a Diameter

        Using a vernier caliper, measure the slip ring diameter.

        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.