Toyota Tundra. Manual — part 1820

Fig. 301: Laying Strip Of Plastigage Across Camshaft Journals
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Standard oil clearance (for Cylinder Head RH)

OIL CLEARANCE SPECIFICATION

Fig. 302: Measuring Plastigage At Widest Point
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Standard oil clearance (for Cylinder Head LH)

OIL CLEARANCE SPECIFICATION

Maximum oil clearance (for Cylinder Head RH)

Item

Specified Condition

No 1 (Intake)

0 008 to 0 038 mm (0 000315

to 0 00150 in )

No 1 (Exhaust)

0 040 to 0 079 mm (0 00157

to 0 00311 in )

Others

0 025 to 0 062 mm (0 000984

to 0 00244 in )

Item

Specified Condition

No 1

0 040 to 0 079 mm (0 00157

to 0 00311 in )

Others

0 025 to 0 062 mm (0 000984

to 0 00244 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

OIL CLEARANCE SPECIFICATION

Maximum oil clearance (for Cylinder Head LH)

OIL CLEARANCE SPECIFICATION

If the oil clearance is greater than the maximum, replace the camshaft bearings and/or camshaft If
necessary, replace the camshaft bearing caps and cylinder head together

Reference

SPECIFIED CONDITION REFERENCE

h

Remove the Plastigage completely

i

Remove the camshafts

j

Remove the camshaft bearing

14

INSPECT CAMSHAFTS

a

Inspect the camshaft for runout

1

Place the camshaft on V-blocks

2

Using a dial indicator, measure the runout at the center journal

Maximum runout: 0.06 mm (0.00236 in.)

If the runout is greater than the maximum, replace the camshaft

Item

Specified Condition

No 1 (Intake) 0 07 mm (0 00276 in )

Others

0 10 mm (0 00394 in )

Item Specified Condition

-

0 10 mm (0 00394 in )

Item

Specified Condition

Cylinder head journal bore

diameter

40 009 to 40 017 mm (1 5752

to 1 5755 in )

Camshaft bearing center wall

thickness (Mark "2")

2 004 to 2 008 mm (0 0789 to

0 0791 in )

Camshaft journal diameter

35 971 to 35 985 mm (1 4162

to 1 4167 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 303: Measuring Circle Runout At Center Journal Using Dial Indicator
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Inspect the cam lobes

1

Using a micrometer, measure the cam lobe height

Standard cam lobe height

CAM LOBE HEIGHT SPECIFICATION

Fig. 304: Measuring Cam Lobe Height Using Micrometer
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Minimum cam lobe height

CAM LOBE HEIGHT SPECIFICATION

If the cam lobe height is less than the minimum, replace the camshaft

Item

Specified Condition

Intake

44 168 to 44 268 mm (1 739

to 1 742 In )

Exhaust

44 580 to 44 680 mm (1 755

to 1 759 In

Item Specified Condition

Intake 44 018 mm (1 73 In )

Exhaust 44 430 mm (1 75 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 305: Measuring Cam Lobe Height
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

c

Inspect the camshaft journals

1

Using a micrometer, measure the journal diameter

Standard journal diameter

JOURNAL DIAMETER SPECIFICATION

If the journal diameter is not as specified, check the oil clearance

15

INSPECT CAMSHAFT TIMING GEAR ASSEMBLY

a

Fix the intake camshaft with a vise

b

Align the knock pin hole in the camshaft timing gear with the knock pin of the camshaft, and install
the camshaft timing gear with the bolt

Torque: 100 N*m (1020 kgf*cm, 74 ft.*lbf)

Item

Specified Condition

No 1

35 971 to 35 985 mm (1 416

to 1 417 in )

Other

22 959 to 22 975 mm (0 904

to 0 905 in )

NOTE:

Be careful not to damage the camshaft.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra