Toyota Tundra. Manual — part 1918

DRIVE BELT

COMPONENTS

2

Lean mixture causing misfire

High High

Rough idle (Black smoke
from exhaust)

1

Restricted air filter

2

Faulty SFI system:



Faulty pressure regulator



Defective ECT sensor



Faulty ECM - Faulty injectors



Faulty throttle position sensor



Faulty MAF meter

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra

Fig. 8: Identifying Drive Belt Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

ON-VEHICLE INSPECTION

1

INSPECT FAN AND GENERATOR V BELT

a

Check the 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 belt is cracked

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra



The belt is worn out to the extent that the cords are exposed



The belt has chunks missing from the ribs

Fig. 9: Identifying Damage Belt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Check that the belt fits properly in the ribbed grooves

HINT:

Check with your hand to confirm that the 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

2

INSPECT V-RIBBED BELT TENSIONER ASSEMBLY

a

Check that nothing gets caught in the tensioner by turning it clockwise and counterclockwise If the
result is not as specified condition, replace the tensioner

REMOVAL

1

REMOVE V-BANK COVER SUB-ASSEMBLY (See REMOVAL )

2

REMOVE NO. 1 ENGINE UNDER COVER (See REPLACEMENT )

3

REMOVE FAN AND GENERATOR V BELT

a

While turning the belt tensioner counterclockwise, align the service hole for the belt tensioner and
the belt tensioner fixing position, and then insert a bar of Ø 5 mm (0 197 in ) into the service hole
to fix the belt tensioner in place

HINT:

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra

The pulley bolt for the belt tensioner has a left-hand thread

Fig. 10: Turning Belt Tensioner
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Remove the V belt

INSTALLATION

1

INSTALL FAN AND GENERATOR V BELT

a

Set the V belt onto every part

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (3UR-FBE) - Tundra