Charging System (Service Information): Generator: Inspection: Inspection

INSPECT GENERATOR CLUTCH PULLEY
1. Hold the center of the pulley, and confirm that the outer ring turns counterclockwise and does not turn clockwise.
  
  Fig 1: View Of Checking Clutch Pulley
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the generator clutch pulley.
INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
1. Using a vernier caliper, measure the brush length.
  
  Fig 2: Measuring Brush Length Using Vernier Calipers
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Standard length
  
  9.5 to 11.5 mm (0.374 to 0.453 in.)
  
  Minimum length
  
  4.5 mm (0.177 in.)
  
  If the brush length is less than the minimum, replace the generator brush holder assembly.

INSPECT GENERATOR ROTOR ASSEMBLY

Check the appearance.

Fig 3: View Of Checking Bearing
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Check that the bearing is not rough or worn.
  OK
  
  The bearing rotates smoothly.
  
  If the result is not as specified, replace the generator rotor assembly.

Check the resistance.

Fig 4: Measuring Resistance Between Slip Rings

GTY162484

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance between the slip rings.

Standard resistance

Condition	Specified Condition
20°C (68°F)	2.3 to 2.7 Ω

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

Measure the resistance between the slip ring and rotor core.

Fig 5: Measuring Resistance Between Slip Ring And Rotor Core

GTY161815

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard resistance

Tester Connection	Specified Condition
Slip ring - Rotor core	1 MΩ or higher

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

Check the slip ring diameter.

Fig 6: Measuring Slip Ring Diameter Using Vernier Calipers
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. 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 mm (0.551 in.)
  
  If the diameter is less than the minimum, replace the generator rotor assembly.

INSPECT GENERATOR DRIVE END FRAME BEARING
1. Check that the bearing is not rough or worn.
  
  Fig 7: View Of Checking Bearing Rough Or Worn
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK
  
  The bearing rotates smoothly.
  
  If the bearing does not rotate smoothly, replace the bearing.