Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Noise Occurs from V-ribbed Belt or Generator Assembly

Toyota Tacoma 2015-2018 Service Manual / 2gr-fks Charging / Charging System / Noise Occurs from V-ribbed Belt or Generator Assembly

PROCEDURE

1.

CONFIRM PROBLEM SYMPTOM

(a) Confirm the problem symptom.

Result

Result

Proceed to

Noise occurs from fan and generator V belt

A

Noise occurs from generator assembly

B

B

GO TO STEP 6

A

2.

CHECK FAN AND GENERATOR V BELT FOR WEAR

(a) 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 FAN AND GENERATOR V BELT

OK

3.

CHECK GENERATOR PULLEY WITH CLUTCH FOR WEAR

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

OK:

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

NG

REPLACE GENERATOR PULLEY WITH CLUTCH

OK

4.

CHECK FOR NOISE WHILE CLUTCH PULLEY IS OPERATING

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

OK:

The generator pulley with clutch is not loose.

NG

TIGHTEN GENERATOR PULLEY WITH CLUTCH TO SPECIFIED TORQUE

OK

5.

INSPECT GENERATOR PULLEY WITH CLUTCH (UNIT INSPECTION)

(a) Remove the generator assembly (See page ). (b) Check the installation condition of the generator pulley cap. ).

(b) Check the installation condition of the generator pulley cap.

OK:

The generator pulley cap is not loose or missing.

(c) 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).

(d) 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).

(e) 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.

(f) 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.

(g) 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.

OK

INSPECT PULLEY OTHER THAN GENERATOR ASSEMBLY PULLEY

NG

REPLACE GENERATOR PULLEY WITH CLUTCH

6.

CHECK FOR NOISE WHEN ROTOR IS TURNING FREELY

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

OK:

Noise does not occur.

(b) 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.

NG

REPLACE GENERATOR PULLEY WITH CLUTCH

OK

7.

CHECK ENGAGEMENT OF GENERATOR PULLEY WITH CLUTCH

(a) Remove the generator assembly (See page ). ).

(b) 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.

OK

REPAIR OR REPLACE GENERATOR ASSEMBLY

NG

REPLACE GENERATOR PULLEY WITH CLUTCH

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