IS 250C V6-25L (4GR-FSE) (2011) Alternator Testing & Inspection
Alternator: Testing and Inspection
4GR-FSE BATTERY / CHARGING: GENERATOR: 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.
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If the result is not as specified, replace the clutch pulley.
2. INSPECT GENERATOR DRIVE END FRAME BEARING
(a) Check that the bearing is not rough or worn.
OK:
The bearing rotates smoothly.
If the bearing does not rotate smoothly, replace the bearing.
3. INSPECT GENERATOR BRUSH HOLDER ASSEMBLY
(a) Using a vernier caliper, measure the length of the exposed brushes.
Text in Illustration
Standard exposed length:
9.5 to 11.5 mm (0.375 to 0.452 in.)
Minimum exposed length:
4.5 mm (0.178 in.)
If the exposed length is less than the minimum, replace the brush holder assembly.