Toyota Tundra. Manual — part 1909

b

Install the camshaft timing tube to the camshaft (see REASSEMBLY )

c

Check the lock of the camshaft timing tube

1

Check that the camshaft timing tube is locked

Fig. 414: Using Micrometer To Measure Journal Diameter
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Release the lock pin

1

Clean the camshaft timing tube journal with non-residue solvent

2

Wrap tape around the entire journal to block the 4 oil holes as shown below

3

Open a hole in the tape at 2 places, one in the retard side oil hole and one in the advance side
oil hole as shown below

Fig. 415: Identifying Retard Side Oil Hole And Advance Side Oil Hole
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

4

Apply approximately 200 kPa (2 0 kgf/cm

2

, 29 psi) of air pressure to the 2 open oil holes

(the advance side oil hole and the retard side oil hole)

HINT:

The lock pin will be released when air pressure is applied

Fig. 416: Applying Air Pressure To Open Oil Holes
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5

Check that the camshaft timing tube revolves in the advance direction when reducing the air
pressure applied to the retard side oil hole

6

When the camshaft timing tube reaches the most advanced position, release the air pressure
from the retard side oil hole and advance side oil hole, in that order

Fig. 417: Releasing Air Pressure From Retard & Advance Side Oil Hole
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

NOTE:

Cover the oil holes with a piece of cloth when applying pressure
to keep oil from splashing.

NOTE:



Do not release the air pressure from the advance side oil
hole first. The tube may abruptly shift in the retard

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

e

Check for smooth rotation

1

Apply 60 kPa (0 6 kgf/cm

2

, 8 7 psi) of air pressure to the retard side oil hole to release the

lock pin

2

Turn the camshaft timing tube within its movable range (21°) 2 or 3 times, but do not turn it
to the most retarded position Make sure that the camshaft timing tube turns smoothly

f

Check the lock in the most retarded position

1

Confirm that the camshaft timing tube is locked at the most retarded position

g

Remove the camshaft timing tube (see DISASSEMBLY )

6

INSPECT CAMSHAFT GEAR SPRING

a

Using a vernier caliper, measure the gap distance of the gear spring

Standard gap distance: 18.2 to 18.8 mm (0.717 to 0.740 in.)

If the gap distance is not as specified, replace the gear spring

Fig. 418: Using Vernier Caliper To Measure Gap Distance Of Gear Spring
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

7

INSPECT CAMSHAFT OIL CLEARANCE

a

Clean the bearing caps and camshaft journals

b

Check the bearings for flaking and scoring

If the bearings are damaged, replace the cylinder head sub-assembly

c

Place the camshafts on the cylinder head

direction and break the lock pin.



When releasing the air pressure from the retard side oil
hole, do not release the air pressure too quickly to prevent
damage.

NOTE:

Do not use air pressure to perform the smooth rotation check.
Always perform the check by hand.

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra

d

Lay a strip of Plastigage across each of the camshaft journals

Fig. 419: Identifying Strip Of Plastigage
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

e

Install the bearing caps

HINT:



for Bank 1, refer to the following procedures (see INSTALLATION )



for Bank 2, refer to the following procedures (see INSTALLATION )

f

Remove the bearing caps

HINT:



for Bank 1, refer to the following procedures (see REMOVAL )



for Bank 2, refer to the following procedures (see REMOVAL )

g

Measure the Plastigage at its widest point

Standard oil clearance

OIL CLEARANCE SPECIFICATION

NOTE:

Do not turn the camshaft.

Journal Position

Specified Condition

Camshaft journal

0 030 to 0 071 mm (0 00118 to 0 00280 in )

Camshaft timing tube journal 0 036 to 0 057 mm (0 00141 to 0 00224 in )

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (2UZ-FE) - Tundra