Lexus LS400 (2000 year). Service manual — part 94

A03182

Upward

A03176

Seal Packing

Groove

Seal Width
1.5 mm

A03179

Front

A03186

Push

EM–64

–

ENGINE MECHANICAL

CYLINDER HEAD

1246

(4)

Place the camshaft oil control valve filter to the cylin-
der head.

NOTICE:
Be careful installation direction.

(5)

Remove any old packing (FIPG) material from front
bearing cap.

(6)

Apply seal packing to the front bearing cap as
shown in the illustration.

Seal packing:
Part No. 08826–00080 or equivalent

Install a nozzle that has been cut to a 1.5 mm
(0.06 in.) opening.

Parts must be assembled within 5 minutes of
application. Otherwise the material must be
removed and reapplied.

Immediately remove nozzle from the tube
and reinstall cap.

NOTICE:
Do not apply seal packing to the front bearing cap grooves.

(7)

Install the front bearing cap.

HINT:
Installing the front bearing cap will determine the thrust portion
of the camshaft.

(8)

Install the other bearing cap in the sequence shown
with the arrow mark facing forward.

HINT:
Align the arrow marks at the front and rear of the cylinder head
with the mark on the bearing cap.

(9)

Push in the camshaft oil seal.

A02855

E

D

E

C

A

E

D

E

C

B

A02855

E D

E

C

A

E

D

E

C

B

A03180

Front

21

20

18

17

16

15

14

12

13

11

10

8

7

2

6

5

4

22

1

3

9

19

A02853

A03181

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–65

1247

(10) Apply a light coat of engine oil on the threads and

under the heads (D and E) of the bearing cap bolts.

HINT:
Do not apply engine oil under the heads of the bearing cap bolt
(A), (B) and (C).

(11) Install the oil feed pipe and the 22 bearing cap bolts

as shown.

HINT:
Each bolt length is indicated in the illustration.
Bolt length:
94 mm (3.70 in.) for A
72 mm (2.83 in.) for B
25 mm (0.98 in.) for C
52 mm (2.05 in.) for D
38 mm (1.50 in.) for E

(12) Uniformly tighten the 22 bearing cap bolts in several

passes, in the sequence shown.

Torque:
Bolt C: 7.5 N·m (80 kgf·cm, 66 in.·lbf)
Others: 16 N·m (160 kgf·cm, 12 ft·lbf)

(13) Boring the service bolt installed in the driven sub–

gear upward by turning the hexagon wrench head
portion of the camshaft with a wrench.

(14) Remove the service bolt.

(c)

Install the LH camshafts.
(1)

Apply MP grease to the thrust portion of the intake
and exhaust camshafts.

(2)

Place the intake and exhaust camshafts.

(3)

Engage the intake to the exhaust gear by meeting
the timing marks (2 dot marks) on each gear.

A03175

Upward

A03177

Seal Packing

Groove

Seal Width
1.5 mm

A03183

Front

A03187

Push

EM–66

–

ENGINE MECHANICAL

CYLINDER HEAD

1248

(4)

Place the camshaft oil control valve filter to the cylin-
der head.

NOTICE:
Be careful installation direction.

(5)

Remove any old packing (FIPG) material.

(6)

Apply seal packing to the front bearing cap.

Seal packing:
Part No. 08826–00080 or equivalent

Install a nozzle that has been cut to a 1.5 mm
(0.06 in.) opening.

Parts must be assembled within 5 minutes of
application. Otherwise the material must be
removed and reapplied.

Immediately remove nozzle from the tube
and reinstall cap.

NOTICE:
Do not apply seal packing to the front bearing cap grooves.

(7)

Install the front bearing cap.

HINT:
Installing the front bearing cap will determine the thrust portion
of the camshaft.

(8)

Install the other bearing cap in the sequence shown
with the arrow mark facing forward.

HINT:
Align the arrow marks at the front and rear of the cylinder head
with the mark on the bearing cap.

(9)

Push in the camshaft oil seal.

A02858

E

D

E

C

A

E

D

E

C

B

A03184

Front

21

20

18

17

16

15

14

12

13

11

8

7

2

6

5

4

22

1

3

9

19

10

A02856

Service
Bolt

EM7143

Seal Packing

–

ENGINE MECHANICAL

CYLINDER HEAD

EM–67

1249

(10) Apply a light coat of engine oil on the threads and

under the heads (D and E) of the bearing cap bolts.

HINT:
Do not apply engine oil under the heads of the bearing cap bolt
(A), (B) and (C).

(11) Install the oil feed pipe and the 22 bearing cap bolts

as shown.

HINT:
Each bolt length is indicated in the illustration.
Bolt length:
94 mm (3.70 in.) for A
72 mm (2.83 in.) for B
25 mm (0.98 in.) for C
52 mm (2.05 in.) for D
38 mm (1.50 in.) for E

(12) Uniformly tighten the 22 bearing cap bolts in several

passes, in the sequence shown.

Torque:
Bolt C: 7.5 N·m (80 kgf·cm, 66 in.·lbf)
Others: 16 N·m (160 kgf·cm, 12 ft·lbf)

(13) Boring the service bolt installed in the driven sub–

gear upward by turning the hexagon wrench head
portion of the camshaft with a wrench.

(14) Remove the service bolt.

11.

CHECK AND ADJUST VALVE CLEARANCE
(See page

EM–4

)

Turn the camshaft and position the cam lobe upward, and
check and adjust the valve clearance.

12.

INSTALL SEMI–CIRCULAR PLUGS

(a)

Remove any old packing (FIPG) material.

(b)

Apply seal packing to the semi–circular plug grooves.
Seal packing:
Part No. 08826–00080 or equivalent