Toyota Tundra. Manual — part 1925

Fig. 41: Measuring Plastigage Widest
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the oil clearance is more than the maximum, replace the camshaft If necessary, replace the
camshaft housing

2

INSPECT CAMSHAFT THRUST CLEARANCE

a

Inspect the LH side camshafts

1

Install the LH side camshafts

2

Using a dial indicator, measure the thrust clearance while moving the camshaft back and
forth

Standard thrust clearance:

0.08 to 0.135 mm (0.00315 to 0.00531 in.)

Maximum thrust clearance:

0.15 mm (0.00591 in.)

If the thrust clearance is more than the maximum, replace the camshaft housing If the thrust
surface is damaged, replace the camshaft

2009 Toyota Tundra

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

Fig. 42: Checking Camshaft Thrust Clearance
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Inspect the RH side camshafts

1

Install the RH side camshafts

2

Using a dial indicator, measure the thrust clearance while moving the camshaft back and
forth

Standard thrust clearance:

0.08 to 0.135 mm (0.00315 to 0.00531 in.)

Maximum thrust clearance:

0.15 mm (0.00591 in.)

If the thrust clearance is more than the maximum, replace the camshaft housing If the thrust
surface is damaged, replace the camshaft

3

INSPECT COMPRESSION SPRING

a

Using a vernier caliper, measure the free length of the inner compression spring

Standard free length:

49.39 mm (1.94 in.)

If the free length is not as specified, replace the spring

2009 Toyota Tundra

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

Fig. 43: Checking Free Length Of Inner Compression Spring
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a steel square, measure the deviation of the inner compression spring

Maximum deviation:

1.0 mm (0.0394 in.)

Maximum angle (reference): 2°

If the deviation is more than the maximum, replace the spring

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.)

2009 Toyota Tundra

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

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

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.)

2009 Toyota Tundra

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