Toyota Sequoia (2005). Manual - part 658

A02859

A02850

SST

Service Bolt

Turn

A02861

A23341

Do Not Remove

A23342

10 mm
Hexagon
Wrench

EM–42

–

ENGINE MECHANICAL

CYLINDER HEAD

2621

25.

DISASSEMBLE EXHAUST CAMSHAFTS

(a)

Mount the hexagon head portion of the camshaft in a vise.

NOTICE:
Be careful not to damage the camshaft.

(b)

Using SST, turn the sub–gear clockwise, and remove the
service bolt.
SST

09960–10010 (09962–01000, 09963–00500)

(c)

Using snap ring pliers, remove the snap ring.

(d)

Remove the wave washer.

(e)

Remove the camshaft sub–gear.

(f)

Remove the camshaft gear spring.

NOTICE:
Be careful not to damage the camshaft.

26.

REMOVE CAMSHAFT TIMING TUBE FROM INTAKE
CAMSHAFT

(a)

Mount the hexagon head portion of the intake camshaft
in a vise.

NOTICE:

Be careful not to damage the camshaft.

The 4 bolts shown in the illustration determine back-
lash of the gear in the timing tube, so do not remove
them. If any of the 4 bolts are removed, install a new
timing tube assembly.

(b)

Remove the screw plug and seal washer.

(c)

Using a 10 mm hexagon wrench, and remove the bolt.

(d)

Pull out the timing tube and drive gear assembly from the
camshaft.

A23343

5 mm Hexagon Wrench

SST

B02642

B02644

A04229

RH Bank

LH Bank

1

2

3

4

5

6

7

8

9

10

3

1

5

7

10

9

8

6

2

4

B02643

B02645

A04230

Portion A

Portion A

RH Bank

LH Bank

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–43

2622

(e)

Using SST and a 5 mm hexagon wrench, remove the 4
bolts, drive gear and oil seal.
SST

09960–10010 (09962–01000, 09963–00500)

NOTICE:
Be careful not to damage the timing tube.
27.

REMOVE SPARK PLUGS

28.

REMOVE CYLINDER HEAD AND EXHAUST MAN-
IFOLD ASSEMBLIES

(a)

Uniformly loosen the 10 cylinder head bolts on one side
of each cylinder head in several steps, in the sequence
shown, then perform the same procedure to the other
side as shown. Remove the 20 cylinder head bolts and
plate washers.

NOTICE:

Cylinder head warpage or cracking could result from
removing bolts in incorrect order.

Do not drop the plate washer for cylinder head bolt
into portion A of the cylinder head. If dropped into
portion A, the plate washer will pass through the cyl-
inder head and cylinder block into the oil pan.

A02871

A23344

A23345

EM–44

–

ENGINE MECHANICAL

CYLINDER HEAD

2623

(b)

Lift the cylinder head from the dowels on the cylinder
block, and place the 2 cylinder heads on wooden blocks
on a bench.

HINT:
If the cylinder head is difficult to lift off, pry between the cylinder
head and cylinder block with a screwdriver.
NOTICE:

Be careful not to damage the contact surfaces of the
cylinder head and cylinder block.

The cylinder head should not be tilted so as to secure
the valve lifter. If the cylinder head is tilted, remove
the valve lifter and check that the adjusting shim is
set correctly.

29.

REMOVE RH EXHAUST MANIFOLD FROM CYLINDER
HEAD

(a)

Remove the 4 bolts and heat insulator.

(b)

Remove the 8 nuts, exhaust manifold and gasket.

30.

REMOVE LH EXHAUST MANIFOLD FROM CYLINDER
HEAD

(a)

Remove the 4 bolts and heat insulator.

(b)

Remove the 8 nuts, exhaust manifold and gasket.

EM0L1–09

A03191

SST

A03192

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–45

2624

DISASSEMBLY

1.

REMOVE VALVE LIFTERS AND SHIMS

HINT:
Arrange the valve lifters and shims in correct order.
2.

REMOVE VALVES

(a)

Using SST, compress the valve spring and remove the 2
keepers.
SST

09202–70020  (09202–00010)

(b)

Remove the spring retainer, the valve spring, the valve
and the spring seat.

HINT:
Arrange the valves, valve springs, spring seats and spring re-
tainers incorrect order.

(c)

Using needle–nose pliers, remove the oil seal.