Confirm the problem symptom.

• Result:

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

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

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

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

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

• Result:

• The Result	Proceed to
  OK	A
  NG (Generator Assembly (for 100 A Type))	B
  NG (Generator Assembly (for 130 A Type))	C

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

• OK:
• The generator pulley with clutch is not loose.

Remove the generator assembly.

Check the installation condition of the generator pulley cap.

• OK:
• The generator pulley cap is not loose or missing.

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).

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

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

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

• OK:
• Noise does not occur when turned in both directions.

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

• OK:
• The generator pulley with clutch does not have runout.

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

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

• Result:

• The Result	Proceed to
  OK	A
  NG (Generator Assembly (for 100 A Type))	B
  NG (Generator Assembly (for 130 A Type))	C

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

• OK:
• Noise does not occur.

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

• OK:
• Noise does not occur.

• Result:

• The Result	Proceed to
  OK	A
  NG (Generator Assembly (for 100 A Type))	B
  NG (Generator Assembly (for 130 A Type))	C

Remove the generator assembly.

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

• OK:
• The generator pulley with clutch locks.

• Result:

• The Result	Proceed to
  OK (Generator Assembly (for 100 A Type))	A
  OK (Generator Assembly (for 130 A Type))	B
  NG (Generator Assembly (for 100 A Type))	C
  NG (Generator Assembly (for 130 A Type))	D