Toyota 2GR-FE Manual page 856

CH–18
Free
Length
Slip Rings
CH
Slip Ring
2GR-FE CHARGING – GENERATOR
Lock
A128078E01
A128079E01
A079306E02
Ohmmeter
B012264E08
Ohmmeter
Rotor
B012265E01
INSPECTION
1. INSPECT GENERATOR CLUTCH PULLEY
(a) 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.
2. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
(a) Using vernier calipers, measure the length of the
exposed brushes.
Standard exposed length:
9.5 to 11.5 mm (0.374 to 0.453 in.)
Minimum exposed length:
4.5 mm (0.177 in.)
If the exposed length is less than the minimum,
replace the brush holder assembly.
3. INSPECT GENERATOR ROTOR ASSEMBLY
(a) Check that the generator rotor bearing is not rough
or worn.
If necessary, replace the generator rotor assembly.
(b) Check the generator rotor for an open circuit.
(1) Using an ohmmeter, measure the resistance
between the slip rings.
Standard resistance
Condition
Approx. 20°C (68°F)
If the result is not as specified, replace the
generator rotor assembly.
(c) Check the rotor for a short to ground.
(1) Using an ohmmeter, measure the resistance
between the slip ring and rotor.
Standard resistance
Tester condition
Slip ring - Rotor
If the result is not as specified, replace the
generator rotor assembly.
Specified condition
2.3 to 2.7 Ω
Specified condition
1 MΩ or higher