Toyota Tundra. Manual — part 1926

If the overall length is less than the minimum, replace the intake valve

Fig. 47: Checking Valve's Overall Length
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5

INSPECT EXHAUST VALVE

a

Using a micrometer, measure the diameter of the valve stem

Standard valve stem diameter:

5.465 to 5.480 mm (0.215 to 0.216 in.)

Fig. 48: Checking Diameter Of Valve Stem
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a vernier caliper, measure the valve head margin thickness

Standard margin thickness:

1.4 mm (0.0551 in.)

Minimum margin thickness:

0.50 mm (0.0197 in.)

If the margin thickness is less than the minimum, replace the exhaust valve

2009 Toyota Tundra

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

Fig. 49: Checking Valve Head Margin Thickness
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Using a vernier caliper, measure the valve's overall length

Standard overall length:

110.40 mm (4.35 in.)

Minimum overall length:

109.90 mm (4.33 in.)

If the overall length is less than the minimum, replace the exhaust valve

Fig. 50: Checking Valve's Overall Length
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6

INSPECT VALVE GUIDE BUSH OIL CLEARANCE

a

Using a caliper gauge, measure the inside diameter of the guide bush

Standard bush inside diameter:

5.51 to 5.53 mm (0.217 to 0.218 in.)

2009 Toyota Tundra

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

Fig. 51: Checking Inside Diameter Of Guide Bush
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Subtract the valve stem diameter measurement from the guide bush inside diameter measurement

Standard oil clearance

STANDARD OIL CLEARANCE SPECIFICATIONS

Maximum oil clearance

MAXIMUM OIL CLEARANCE SPECIFICATIONS

If the oil clearance is more than the maximum, replace the valve and guide bush

7

INSPECT INTAKE VALVE SEAT

Fig. 52: Identifying Intake Valve Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Item

Specified Condition

Intake 0 025 to 0 060 mm (0 000984 to 0 00236 in )

Exhaust 0 030 to 0 065 mm (0 00118 to 0 00256 in )

Item

Specified Condition

Intake 0 08 mm (0 00315 in )

Exhaust 0 10 mm (0 00394 in )

2009 Toyota Tundra

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

a

Apply a light coat of Prussian blue to the valve face

b

Lightly press the valve face against the valve seat

HINT:

Do not rotate the valve while pressing the valve

c

Check the valve face and valve seat

1

Check that the contact surfaces of the valve seat and valve face are in the middle area of their
respective surfaces, with the width between 1 1 to 1 5 mm (0 0433 to 0 0591 in ) If not,
correct the valve seat

2

Check that the contact surfaces of the valve seat and valve face are even around the entire
valve seat

If not, correct the valve seat

8

INSPECT EXHAUST VALVE SEAT

Fig. 53: Identifying Exhaust Valve Seat
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

a

Apply a light coat of Prussian blue to the valve face

b

Lightly press the valve face against the valve seat

HINT:

Do not rotate the valve while pressing the valve

c

Check the valve face and valve seat

1

Check that the contact surfaces of the valve seat and valve face are in the middle area of their
respective surfaces, with the width between 1 1 to 1 5 mm (0 0433 to 0 0591 in ) If not,
correct the valve seat

2

Check that the contact surfaces of the valve seat and valve face are even around the entire
valve seat

2009 Toyota Tundra

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