Sienna AWD V6-3.3L (3MZ-FE) (2004)
Drive Belt: Testing and Inspection
INSPECT DRIVE BELT
a. Visually check the belt for excessive wear, frayed cords etc.
HINT:
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If any defect found, replace the drive belt.
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Cracks on the rib side of a belt are considered acceptable.If the belt has chunks missing from the ribs, it should be replaced.
b. Check that it fits properly in the ribbed grooves.
HINT: Check with your hand to confirm that the belt has not slipped out of the groove on the bottom of the pulley.
INSPECT V-RIBBED BELT
a. Belt deflection
Pressing force: 98 N (10 kgf, 221 lbs.)