Tundra 4WD V8-4.7L (2UZ-FE) (2003)
Drive Belt: Testing and Inspection
INSPECTION
INSPECT DRIVE BELT
a. Visually check the belt for excessive wear, frayed cords, etc.
If any defect has been found, replace the drive belt.
HINT: Cracks on the rib side of a belt are considered acceptable. If the missing chunks from the ribs are found on the belt, it should be
replaced.
b. 5VZ-FE engine:
Belt tension gauge:
DENSO BTG-20 (95506-00020)
Borroughs No. BT-33-73F
Drive belt tension:
New belt: 135 - 180 lbs.
Used belt: 85 - 120 lbs.
If the belt tension is not as specified, adjust it.
HINT:
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"New belt" refers to a belt which has been used less than 5 minutes on a running engine.
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"Used belt" refers to a belt which has been used on a running engine for 5 minutes or more.
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After installing a belt, check that it fits properly in the ribbed grooves.
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Check with your hand to confirm that the belt has not slipped out of the groove on the bottom of the pulley.
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After installing a new belt, run the engine for about 5 minutes and recheck the belt tension.