GENERATOR INSPECTION

PROCEDURE

1. INSPECT GENERATOR PULLEY WITH CLUTCH

   
   

   1. 

      	Free
      	Lock

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

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

2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY

   
   
   1. 

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

3. INSPECT GENERATOR ROTOR ASSEMBLY

   
   

   1. 

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

      If necessary, replace the generator rotor assembly.

   2. 

      *a

      Slip Ring

      Check the generator rotor assembly 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 20°C (68°F) 1.85 to 2.25 Ω

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

   3. 

      *a	Rotor Core
      *b	Slip Ring

      Check if the generator rotor assembly is grounded.

      
      

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

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

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

   4. 

      Using a vernier caliper, measure each 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 either diameter is less than the minimum, replace the generator rotor assembly.