Toyota Tundra. Manual — part 1076
Fig. 21: Removing Coil Using SST
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
6. REMOVE GENERATOR ROTOR ASSEMBLY
a. Remove the generator washer and the generator rotor.
Fig. 22: Identifying Generator Washer And Generator Rotor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
7. REMOVE GENERATOR DRIVE END FRAME BEARING
a. Remove the 4 screws and retainer plate.
Fig. 23: Identifying Screws And Retainer Plate
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
b. Using SST and a hammer, tap out the bearing.
SST 09950-60010 (09951 -00250), 09950-70010 (09951-07100)
2009 Toyota Tundra
2009 ELECTRICAL Charging (1GR-FE) - Tundra
Fig. 24: Tapping Out Bearing Using SST
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
INSPECTION
1. INSPECT GENERATOR ROTOR ASSEMBLY
a. Check the rotor for an open circuit.
Fig. 25: Checking Rotor For Open Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1. Measure the resistance according to the value(s) in the table below.
Standard resistance
GENERATOR ROTOR ASSEMBLY TESTER CONNECTION SPECIFIED
CONDITION CHART
If the result is not as specified, replace the rotor assembly.
b. Check if the rotor is grounded.
Tester Connection Condition Specified Condition
Slip ring - Slip ling 20°C (68°F)
2.3 to 2.7 ohms
2009 Toyota Tundra
2009 ELECTRICAL Charging (1GR-FE) - Tundra
Fig. 26: Checking Rotor Is Grounded
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
1. Measure the resistance according to the value(s) in the table below.
Standard resistance
GENERATOR ROTOR ASSEMBLY TESTER CONNECTION SPECIFIED
CONDITION CHART
If the result is not as specified, replace the rotor assembly.
c. Check that the slip rings are not rough or scored. If rough or scored, replace the rotor assembly.
d. 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. 27: Measuring Slip Ring Diameter Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
Tester Connection Condition Specified Condition
Slip ring - Rotor
Always
10 kohms or higher
2009 Toyota Tundra
2009 ELECTRICAL Charging (1GR-FE) - Tundra
a. Using a vernier caliper, measure the exposed brush length.
Standard exposed length: 10.5 mm (0.413 in.)
Minimum exposed length: 4.5 mm (0.177 in.)
If the exposed length is less than the minimum, replace the brush holder assembly.
Fig. 28: Measuring Exposed Brush Length Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
3. INSPECT GENERATOR ROTOR BEARING
a. When rotating the bearing, check that there is no abnormal noise and that it rotates smoothly.
If necessary, replace the generator rotor assembly.
Fig. 29: Inspecting Generator Rotor Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
4. INSPECT GENERATOR DRIVE END FRAME BEARING
a. When rotating the bearing, check that there is no abnormal noise and that it rotates smoothly. If
necessary, replace the bearing.
2009 Toyota Tundra
2009 ELECTRICAL Charging (1GR-FE) - Tundra
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