Toyota Tundra. Manual — part 1967

Fig. 308: Installing Camshaft Timing Exhaust Gear With Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

g

Remove the camshaft bearing cap (See DISASSEMBLY )

h

Check the camshaft timing exhaust gear lock

1

Make sure that the camshaft timing exhaust gear is locked

i

Release the lock pin

1

Cover the 4 oil paths of the cam journal with vinyl tape as shown in the illustration

Fig. 309: Covering Oil Paths Of Cam Journal With Vinyl Tape
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Break through the tape of the advance side path Then break through the tape of the retard
side path on the opposite side of the advanced side path, as shown in the illustration

3

Apply approximately 200 kPa (2 0 kgf/cm

2

, 29 psi) of air pressure to the two broken paths

(the advance side path and the retard side path)

NOTE:

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

2009 Toyota Tundra

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

Fig. 310: Applying Air Pressure To Broken Paths
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4

Check that the camshaft timing exhaust gear turns in the retard direction when reducing the
air pressure applied to the advance side path

HINT:

The lock pin is released and the camshaft timing exhaust gear turns in the retard direction

Fig. 311: Checking Camshaft Timing Exhaust Gear Turns In Retard Direction
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5

When the camshaft timing exhaust gear moves to the most retarded position, release the air
pressure from the advance side path, and then release the air pressure from the retard side
path

j

Check for smooth rotation

1

Turn the camshaft timing exhaust gear within its movable range (18 5°) 2 or 3 times, but do
not turn it to the most advanced position Make sure that the gear turns smoothly

NOTE:

Be sure to release the air pressure from the advance side path
first. If the air pressure of the retard side path is released first,
the camshaft timing exhaust gear may abruptly shift in the
advance direction and break the lock pin or other parts.

NOTE:

When the air pressure is released from the advance side path

2009 Toyota Tundra

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

k

Check the lock at the most advanced position

1

Make sure that the camshaft timing exhaust gear is locked at the most advanced position

l

Install the camshaft bearing cap (See REASSEMBLY )

HINT:

Only install the exhaust camshaft

m

Install the camshaft housing (See REASSEMBLY )

n

Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt

Fig. 312: Loosening Camshaft Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

o

Remove the camshaft bearing cap (See DISASSEMBLY )

p

Remove the flange bolt and camshaft timing exhaust gear

Fig. 313: Identifying Flange Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

and then from the retard side path, the gear automatically
returns to the most advanced position due to the advance assist
spring operation, and locks. Gradually release the air pressure
from the retard side path before performing the smooth rotation
check.

2009 Toyota Tundra

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

7

INSPECT NO. 1 CHAIN SUB-ASSEMBLY

a

Using a spring scale, pull the chain with a force of 147 N (15 kgf, 33 1 lbf) as shown in the
illustration

Fig. 314: Measuring Length Of Pins Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a vernier caliper, measure the length of 15 pins

Maximum chain elongation:

136.9 mm (5.39 in.)

HINT:

Perform the measurement at 3 random places If the elongation is more than the maximum, replace
the chain

8

INSPECT NO. 2 CHAIN SUB-ASSEMBLY

a

Using a spring scale, pull the chain with a force of 147 N (15 kgf, 33 1 lbf) as shown in the
illustration

Fig. 315: Measuring Length Of Pins Using Vernier Caliper
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Using a vernier caliper, measure the length of 15 pins

2009 Toyota Tundra

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