GENERATOR(for TMC Made Cold Area Specification Vehicles) INSPECTION

PROCEDURE


  1. INSPECT GENERATOR CLUTCH PULLEY


    1. A01VM1VE06
      Text in Illustration
      *a Free
      *b Lock

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

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

  2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY


    1. A01VJCYE01
      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. A01VM0GE01
      Text in Illustration
      *1 Slip Ring

      Check the generator rotor assembly for open circuits.


      1. 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) 2.3 to 2.7 Ω

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

    2. A01VFLBE01
      Text in Illustration
      *1 Slip Ring
      *2 Rotor

      Check the generator rotor assembly for short circuits.


      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 MΩ or higher

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

    3. A01VH0I

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

      If necessary, replace the generator rotor assembly.

    4. A01VKXPE01
      Text in Illustration
      *a Diameter

      Using a vernier caliper, measure the slip ring diameter.

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

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

    5. A01VG67

      Check that the slip rings are not rough or scored.

      If rough or scored, replace the generator rotor assembly.

  4. INSPECT GENERATOR DRIVE END FRAME BEARING


    1. A01VH1V

      Check that the generator drive end frame bearing is not rough or worn.

      If necessary, replace the generator drive end frame bearing.