Canada - Engine - Accessory Drive Belt Noise

Bulletin
TSB2175

Issue Date
2005-02-07

Market
Canada

Title
2UZ- ACCESSORY DRIVE BELT NOISE

Component
ENGINE MECHANICAL

Models
'00 - '05 Tundra

INTRODUCTION:
Some customers may experience abnormal squeal noise from the engine accessory drive belt area, usually during cold start-up. An improved accessory drive belt has been developed to correct this condition.

APPLICABLE VEHICLES:
- 2000 - 2005 model year Tundra vehicles equipped with 2UZ-FE engine produced BEFORE the Production Change Effective VIN shown below.






PRODUCTION CHANGE INFORMATION:






PARTS INFORMATION:






WARRANTY INFORMATION:

REPAIR PROCEDURE:
Replace the accessory drive belt with the improved part.

1. Remove Existing Accessory Drive Belt.
A. Using a breaker bar or ratchet with a 14 mm socket, apply counterclockwise force on the accessory drive belt tensioner to release tension and remove the accessory drive belt.

HINT:
The pulley bolt for the belt tensioner has a left hand thread.

B. Using the accessory drive belt routing label located on the passenger side of the radiator core support as a guide, install the new accessory drive belt.

2. Check Belt Tensioner Operation.






A. Check that the belt tensioner moves downward when the drive belt is pressed down at the points indicated in the illustration with approximately 98 (10 kgf, 22.0 lbf) of force.
B. Ensure proper alignment of the belt with the ribbed grooves of each pulley.
C. Check by hand to ensure that the belt has not slipped out of the groove on the bottom of each pulley.






D. Check that the arrow mark on the belt tensioner falls within area "A" of the scale (see illustration).
E. If the arrow mark falls outside area "A," the drive belt is incorrect.

HINT:
When a new belt is installed, it should lie within area "B." If not, the drive belt is incorrect.

NOTE:
Issue of this Technical Service Bulletin is to ensure that proper repair information is available. IT DOES NOT CONSTITUTE AN AUTHORIZATION FOR REPAIR. Normal provisions of the formal warranty policy, as applicable, will apply.