ГЕНЕРАТОР ПРОВЕРКА

PROCEDURE

  1. INSPECT GENERATOR WITH CLUTCH PULLEY

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

      OK
      The outer ring turns counterclockwise and does not turn clockwise.
      A012N2AC01
      *a Free
      *b Lock

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

  2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY

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

      A012HQEC11
      *a Length
      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.

      A012N4YC02
      *a Slip Ring

      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) 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.

      A012JVIC02
      *a Rotor
      *b Slip Ring

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

      A012M28

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

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

      A012HAOC05
      *a 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.

  4. INSPECT GENERATOR DRIVE END FRAME BEARING

    1. Check that the generator drive end frame bearing is not rough or worn and that it rotates smoothly.

      A012JYN

      If the generator drive end frame bearing does not rotate smoothly, replace the generator drive end frame bearing.