Toyota Tundra. Manual — part 1082

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. REMOVE GENERATOR COIL ASSEMBLY

a. Remove the 4 bolts.

Fig. 19: Identifying Generator Coil Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b. Using SST, remove the coil assembly.

SST 09950-40011 (09951-04020,09952-04010, 09953-04020, 09954-04010, 09955-04071, 09957-
04010, 09958-04011)

c. Remove the generator washer.

5. REMOVE GENERATOR ROTOR ASSEMBLY

Fig. 20: Removing Generator Coil Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6. REMOVE GENERATOR DRIVE END FRAME BEARING

a. Remove the 4 screws and retainer plate.

2009 Toyota Tundra

2009 ELECTRICAL Charging (2UZ-FE) - Tundra

Fig. 21: Identifying Retainer Plate Screws
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)

Fig. 22: Tapping Out Bearing
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1. INSPECT GENERATOR ROTOR ASSEMBLY

a. Check the rotor for an open circuit.

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

Standard resistance

GENERATOR ROTOR TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection Condition Specified Condition

Slip ring-Slip ring 20°C (68°F)

2.3 to 2.7 ohms

2009 Toyota Tundra

2009 ELECTRICAL Charging (2UZ-FE) - Tundra

Fig. 23: Identifying Rotor For Open Circuit
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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

b. Check if the rotor is grounded.

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

Standard resistance

GENERATOR ROTOR TESTER CONNECTION SPECIFIED CONDITION CHART

Fig. 24: Identifying Resistance Between Slip Ring & Rotor
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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.

Tester Connection Condition Specified Condition

Slip ring - Rotor

Always

10 kohms or higher

2009 Toyota Tundra

2009 ELECTRICAL Charging (2UZ-FE) - Tundra

Fig. 25: Measuring Slip Ring Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY

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. 26: Measuring Exposed Brush Length
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3. 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.

4. 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.

2009 Toyota Tundra

2009 ELECTRICAL Charging (2UZ-FE) - Tundra