Drive Belt (For Hatchback) On-Vehicle Inspection

Engine Hybrid System. Yaris. Ncp93, 131
1Nz-Fe Engine Mechanical. Yaris. Ncp93, 131

  1. INSPECT FOR FAN AND GENERATOR V BELT

Drive Belt (For Hatchback) -- On-Vehicle Inspection



1. INSPECT FOR FAN AND GENERATOR V BELT


Yaris. Ncp93, 131

  1. Check the fan and generator V belt for wear, cracks or other signs of damage.
    If any of the following defects is found, replace the fan and generator V belt.

    1. The fan and generator V belt is cracked.
    2. The fan and generator V belt is worn out to the extent that the cords are exposed.
    3. The fan and generator V belt has chunks missing from the ribs.


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Drive Belt (For Hatchback) On-Vehicle Inspection

  1. Check that the fan and generator V belt fits properly in the ribbed grooves.

    Text in Illustration
    *a
    		Correct
    *b
    		Incorrect
    HINT:
    Check with your hand to confirm that the fan and generator V belt has not slipped out of the grooves on the bottom of the pulley. If it has slipped out, replace the fan and generator V belt. Install a new fan and generator V belt correctly.


    Yaris. Ncp93, 131.1Nz-Fe Engine Mechanical.Engine (For Sedan).Drive Belt (For Hatchback) On-Vehicle Inspection

  1. Inspect the V belt deflection and tension.

    Text in Illustration
    *A
    		w/o Air Conditioner
    *B
    		w/ Air Conditioner
    Deflection:
    Item
    		Specified Condition
    New belt
    		8.0 to 9.0 mm (0.31 to 0.35 in)
    Used belt
    		12.5 to 13.5 mm (0.49 to 0.53 in)
    Tension:
    Item
    		Specified Condition
    New belt
    		700 to 800 N (71 to 82 kg, 157 to 180 lb)
    Used belt
    		300 to 400 N (31 to 41 kg, 67 to 90 lb)
    If the V belt deflection is not as specified, adjust it.
    HINT:
    1. When inspecting the V belt deflection, apply 98 N (10 kgf) tensile force to it.
    2. Perform the V belt inspection and adjustment while the engine is cold.
    3. V-ribbed belt tension and deflection should be checked immediately after installation of a new belt, and after cranking the engine when inspecting a used belt.
    4. Check the V belt deflection at the point between the specified pulleys where the deflection is greatest.
    5. When installing a new belt, set its tension to the intermediate value of the specification.
    6. When inspecting a belt which has been used for over 5 minutes, apply the Used Belt specifications.
    7. When reinstalling a belt which has been used for over 5 minutes, adjust its deflection and tension to the intermediate values of each Used Belt specification.
    8. V-ribbed belt tension and deflection should be checked after 2 revolutions of engine cranking.
    9. When using a belt tension gauge, confirm its accuracy by using a master gauge first.