Generator (For Denso Made) Inspection

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

Text in Illustration

	Free
	Lock

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.)

Inspect that the bearing is not rough or worn.
If necessary, replace the generator rotor assembly.

Check the rotor 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

   Text in Illustration

   *1

   Slip Ring

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

Check if the rotor is grounded.

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

   Standard Resistance:

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

   Text in Illustration

   *1	Rotor Core
   *2	Slip Ring

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

Using a vernier caliper, measure each 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.)