CHARGING SYSTEM Noise Occurs from V-ribbed Belt or Generator Assembly

PROCEDURE

1. CONFIRM PROBLEM SYMPTOM

   
   

   1. Confirm the problem symptom.

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

   
   

   B

   CHECK FOR NOISE WHEN ROTOR IS TURNING FREELY Click here

   A

2. CHECK FAN AND GENERATOR V BELT FOR WEAR

   
   

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

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

   
   

   NG

   REPLACE OR ADJUST FAN AND GENERATOR V BELT

   OK

3. CHECK GENERATOR PULLEY FOR WEAR

   
   

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

      OK
      The generator pulley grooves are not worn or damaged.

      Result
      Result Proceed to OK A NG (for 130 A Type) B NG (for 100 A Type) C

   
   

   B

   REPLACE GENERATOR PULLEY Click here

   C

   REPLACE GENERATOR PULLEY Click here

   A

4. CHECK FOR NOISE WHILE CLUTCH PULLEY IS OPERATING

   
   

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

      OK
      The generator pulley is not loose.

   
   

   NG

   TIGHTEN GENERATOR PULLEY TO SPECIFIED TORQUE

   OK

5. INSPECT GENERATOR PULLEY (UNIT INSPECTION)

   
   

   1. Remove the generator assembly.

      
      

      • for 130 A Type: Click here

      • for 100 A Type: Click here

   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 pulley for misalignment (interference with the generator assembly).

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

   5. 

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

      OK
      Noise does not occur when turned in both directions.

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

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

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

      Result
      Result Proceed to OK A NG (for 130 A Type) B NG (for 100 A Type) C

   
   

   A

   INSPECT PULLEY OTHER THAN GENERATOR PULLEY

   B

   REPLACE GENERATOR PULLEY Click here

   C

   REPLACE GENERATOR PULLEY Click here

6. CHECK FOR NOISE WHEN ROTOR IS TURNING FREELY

   
   

   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 pulley as the engine stops.

      OK
      Noise does not occur.

      Result
      Result Proceed to OK A NG (for 130 A Type) B NG (for 100 A Type) C

   
   

   B

   REPLACE GENERATOR PULLEY Click here

   C

   REPLACE GENERATOR PULLEY Click here

   A

7. CHECK ENGAGEMENT OF GENERATOR PULLEY

   
   

   1. Remove the generator assembly.

      
      

      • for 130 A Type: Click here

      • for 100 A Type: Click here

   2. 

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

      OK
      The generator pulley locks.

      Result
      Result Proceed to OK A NG (for 130 A Type) B NG (for 100 A Type) C

   
   

   A

   REPAIR OR REPLACE GENERATOR ASSEMBLY Click here

   B

   REPLACE GENERATOR PULLEY Click here

   C

   REPLACE GENERATOR PULLEY Click here