Charging System Noise Occurs From V-Ribbed Belt Or Generator Assembly

INSPECTION PROCEDURE

CONFIRM PROBLEM SYMPTOM

CHECK FAN AND GENERATOR V BELT FOR WEAR

CHECK GENERATOR PULLEY WITH CLUTCH FOR WEAR

CHECK FOR NOISE WHILE CLUTCH PULLEY IS OPERATING

INSPECT GENERATOR WITH CLUTCH PULLEY (UNIT INSPECTION)

CHECK FOR NOISE WHEN ROTOR IS TURNING FREELY

CHECK ENGAGEMENT OF GENERATOR WITH CLUTCH PULLEY

INSPECTION PROCEDURE

1. Confirm the problem symptom.
   

   Result:

   Symptom	Proceed to
   Noise occurs from fan and generator V belt	A
   Noise occurs from generator assembly	B

1. Check the fan and generator V belt for wear or damage.
   

   OK:

   The fan and generator V belt is not worn or damaged.
   

1. Check the generator with clutch pulley grooves for wear or damage.
   

   OK:

   The generator with clutch pulley grooves are not worn or damaged.
   

1. Start the engine and check the generator with clutch pulley for looseness.
   

   OK:

   The generator with clutch pulley is not loose.
   

1. Remove the generator assembly (LandCruiser RM000001ONP052X.html).
   

2. Check the installation condition of the generator pulley cap.
   

   OK:

   The generator pulley cap is not loose or missing.
   

3. Check for grease leaks (for wet pulley) or particle formation due to friction (for dry pulley).
   

   OK:

   No grease leaks (for wet pulley) or large build-up of particles (for dry pulley).
   

4. Check the generator with clutch pulley for misalignment (interference with the generator assembly).
   

   OK:

   The generator with clutch pulley is correctly aligned (no interference with the generator assembly).
   

5. Turn the generator with clutch pulley clockwise and counterclockwise by hand and check for noise.
   

   OK:

   Noise does not occur when turned in both directions.
   

6. Turn the generator with clutch pulley clockwise and counterclockwise by hand and visually check for runout.
   

   OK:

   The generator with clutch pulley does not have runout.
   

7. Using a screwdriver, hold the fan of the generator rotor assembly located inside the generator assembly in place and check that the generator with clutch pulley locks when turned clockwise and turns freely when turned counterclockwise.
   

   OK:

   The generator with clutch pulley locks when turned clockwise and turns freely when turned counterclockwise.
   

1. Perform a road test and check that noise does not occur when decelerating.
   

   OK:

   Noise does not occur.
   

2. Turn the engine off and check that no noise is produced by the generator with clutch pulley as the engine stops.
   

   OK:

   Noise does not occur.
   

1. Remove the generator assembly (LandCruiser RM000001ONP052X.html).
   

2. Using a screwdriver, hold the fan in the generator rotor assembly located inside the generator assembly in place and check that the generator with clutch pulley locks when turned clockwise (locking direction).
   

   OK:

   The generator pulley with clutch locks.