Drive Belt: Testing and Inspection

1NZ-FE ENGINE MECHANICAL: DRIVE BELT (for Hatchback): ON-VEHICLE INSPECTION

1. INSPECT FOR FAN AND GENERATOR V BELT





(a) 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.

* The fan and generator V belt is cracked.

* The fan and generator V belt is worn out to the extent that the cords are exposed.

* The fan and generator V belt has chunks missing from the ribs.

(b) Check that the fan and generator V belt fits properly in the ribbed grooves.





Text in Illustration





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.

(c) Inspect the V belt deflection and tension.





Text in Illustration





Deflection:





Tension:





If the V belt deflection is not as specified, adjust it.

HINT
* When inspecting the V belt deflection, apply 98 N (10 kgf) tensile force to it.
* Perform the V belt inspection and adjustment while the engine is cold.
* 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.
* Check the V belt deflection at the point between the specified pulleys where the deflection is greatest.
* When installing a new belt, set its tension to the intermediate value of the specification.
* When inspecting a belt which has been used for over 5 minutes, apply the Used Belt specifications.
* 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.
* V-ribbed belt tension and deflection should be checked after 2 revolutions of engine cranking.
* When using a belt tension gauge, confirm its accuracy by using a master gauge first.