Toyota Tundra. Manual — part 2202

Fig. 44: Checking Deviation Of Inner Compression Spring
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4. INSPECT INTAKE VALVE

a. Using a micrometer, measure the diameter of the valve stem.

Standard valve stem diameter:

5.470 to 5.485 mm (0.215 to 0.216 in.)

Fig. 45: Measuring 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:

1.25 mm (0.0492 in.)

Minimum margin thickness:

0.50 mm (0.0197 in.)

If the margin thickness is less than the minimum, replace the intake valve.

2009 Toyota Tundra

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

Fig. 46: 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:

105.85 mm (4.17 in.)

Minimum overall length:

105.35 mm (4.15 in.)

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.)

2009 Toyota Tundra

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

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.

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.)

2009 Toyota Tundra

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

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.)

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

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.)

2009 Toyota Tundra

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