Toyota Sequoia (2005). Manual - part 662

EM0L4–09

P08885

Adhesive

15 mm (0.59 in.)

A03212

Protrusion

A05710

SST

A05711

(1)

(2)

(3)

(4)

EM–58

–

ENGINE MECHANICAL

CYLINDER HEAD

2637

REASSEMBLY

HINT:

Thoroughly clean all parts to be assembled.

Before installing the parts, apply fresh engine oil to all slid-
ing and rotating surfaces.

Replace all gaskets and oil seals with new ones.

1.

INSTALL SPARK PLUG TUBES

HINT:
When using a new cylinder head, spark plug tubes must be
installed.
(a)

Apply adhesive to the end of the spark plug tube.
Adhesive:
Part No. 08833–00070, THREE BOND 1324
or equivalent

(b)

Using a wooden block and hammer, tap in a new spark
tube until there is 40.9 – 42.1 mm (1.610 – 1.658 in.) pro-
truding from the camshaft bearing cap installation surface
of the cylinder head.

NOTICE:
Avoid tapping a new spark plug tube too far for measuring
the amount of the protrusion while tapping.

2.

INSTALL VALVES

(a)

Using SST, push in a new oil seal.
SST

09201–41020

(b)

Install the valve (1), spring seat (2), valve spring (3) and
spring retainer (4).

A05712

SST

A07306

Vinyl Tape

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–59

2638

(c)

Using SST, compress the valve spring and place the 2
keepers around the valve stem.
SST

09202–70020 (09202–00010)

(d)

Using a plastic–faced hammer and the valve stem (not in
use) tip wound with vinyl tape, lightly tap the valve stem
tip to assure proper fit.

NOTICE:
Be careful not to damage the valve stem tip.
3.

INSTALL SHIMS AND VALVE LIFTERS

(a)

Install the shim and valve lifter.

(b)

Check that the valve lifter rotates smoothly by hand.

A23349

EM1X2–01

A23344

A23351

A23350

A23345

EM–60

–

ENGINE MECHANICAL

CYLINDER HEAD

2639

INSTALLATION

1.

INSTALL RH EXHAUST MANIFOLD TO CYLINDER
HEAD

(a)

Place a new gasket on the cylinder head.

(b)

Install the exhaust manifold with 8 new nuts. Uniformly
tighten the nuts in several steps.
Torque: 44 N·m (450 kgf·cm, 32 ft·lbf)

(c)

Install the heat insulator with the 4 bolts.
Torque: 7.5 N·m (76 kgf·cm, 66 in.·lbf)

2.

INSTALL LH EXHAUST MANIFOLD TO CYLINDER
HEAD

(a)

Place a new gasket on the cylinder head.

(b)

Install the exhaust manifold with 8 new nuts. Uniformly
tighten the nuts in several steps.
Torque: 44 N·m (450 kgf·cm, 32 ft·lbf)

A23352

A05563

RH Cylinder Head

LH Cylinder Head

2UR

2UL

B02642

B02644

A04229

RH Bank

LH Bank

1

7

9

4

6

5

3

10

8

2

7

9

6

5

3

10

8

2

1

4

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–61

2640

(c)

Install the heat insulator with the 4 bolts.
Torque: 7.5 N·m (76 kgf·cm, 66 in.·lbf)

3.

PLACE CYLINDER HEADS ON CYLINDER BLOCK

(a)

Place 2 new cylinder head gaskets in the positions on the
cylinder block.

HINT:
On the rear side of the cylinder head gasket are marked to dis-
tinguish the LH and RH banks, a ”2UR” mark for the RH bank
and a ”2UL” mark for the LH bank.
NOTICE:
Be careful of the installation direction.
(b)

Place the 2 cylinder heads in the positions on the cylinder
head gaskets.

4.

INSTALL CYLINDER HEAD BOLTS

HINT:

The cylinder head bolts are tightened in 2 progressive
steps (steps (c) and (e)).

If any cylinder head bolt is broken or deformed, replace
it.

(a)

Apply a light coat of engine oil to the threads and under
the heads of the cylinder head bolts.

(b)

Install the plate washer to the cylinder head bolt.

(c)

Install and uniformly tighten the 10 cylinder head bolts on
one side of the cylinder head in several steps in the se-
quence shown, then perform the same procedure to the
other side as shown.
Torque: 40 N·m (408 kgf·cm, 30 ft·lbf)

If any of the cylinder head bolts does not meet the torque speci-
fication, replace the cylinder head bolt.