Charging (2GR-FSE): Generator: Inspection

INSPECT CLUTCH PULLEY
1. Hold the center of the pulley, and confirm that the outer ring turns counterclockwise and does not turn clockwise.
  If the result is not as specified, replace the clutch pulley.
  
  Fig 1: Checking Clutch Pulley
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
1. Using a vernier caliper, measure the length of the exposed brushes.
  Standard length:
  
  10.5 mm (0.413 in.)
  
  Minimum length:
  
  4.5 mm (0.177 in.)
  
  If the exposed length is less than the minimum, replace the brush holder assembly.
  
  Fig 2: Measuring Length Of Exposed Brushes
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT GENERATOR ROTOR ASSEMBLY

Check that the rotor bearing is not rough or worn.
If necessary, replace the rotor bearing.

Fig 3: Checking Generator Rotor Bearing
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the rotor for an open circuit.

Using an ohmmeter, measure the resistance between the slip rings.
Standard resistance

RESISTANCE SPECIFICATION

Condition	Specified condition
Approx. 20°C (68°F)	1.5 to 1.9 Ω

If the resistance is not within the specified range, replace the rotor assembly.

Fig 4: Measuring Resistance Between Slip Rings

G05287980

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Check the rotor for a short to ground.

Using an ohmmeter, measure the resistance between the slip ring and rotor.
Standard resistance

RESISTANCE SPECIFICATION

Tester condition	Specified condition
Slip ring - Rotor	1 MΩ or higher

If the resistance is not within the specified range, replace the rotor assembly.

Fig 5: Measuring Resistance Between Slip Ring And Rotor

G05287981

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 rotor assembly.

Fig 6: Measuring Slip Ring Diameter Using Vernier Calipers
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT GENERATOR DRIVE END FRAME BEARING
1. Check that the drive end frame bearing is not rough or worn.
  If necessary, replace the drive end frame bearing.
  
  Fig 7: Checking Drive End Frame Bearing
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002