Lexus GS300/400 (2000 year). Service manual — part 142

A02700

A02701

Front

Z17798

2 mm

Seal Width
1 – 2 mm

2 – 3 mm

Seal Packing

No.1

No.3

Seal Packing

2 – 3 mm

S03018

14

8

12

2

6

10

4

3

4

3

9

5

7

1

11

13

14

13

12

11

2

1

8

7

6

5

10

9

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

EM–53

1407

(c)

Place the (Nos. 3, 7 journal) camshaft bearing caps in
their proper location.

(d)

Apply a light coat of engine oil on the threads and under
the heads of the bearing cap bolts.

(e)

Temporarily tighten these bearing cap bolts uniformly and
alternately, in several passes, until the bearing caps are
snug with the cylinder head.

(f)

Apply MP grease to a new camshaft oil seal lip.

(g)

Install the 2 oil seals to the camshafts.

(h)

Clean the installed surfaces of the Nos.1, 3 camshaft
bearing cap and cylinder head with cleaner.

(i)

Apply seal packing to the bearing caps as shown.
Seal packing: Part No. 08826–00080 or equivalent

(j)

Install the other bearing caps in their proper locations.

(k)

Apply a light coat of engine oil on the threads and under
the heads of the bearing cap bolts.

(l)

Install and uniformly tighten the 14 bearing cap bolts on
one side, in several passes, in the sequence shown.
Torque: 20 N·m (200 kgf·cm, 15 ft·lbf)

(m)

Using a 5 mm hexagon wrench, the 2 No.3 camshaft
bearing cap bolts.
Torque: 5.0 N·m (50 kgf·cm, 44 in.·lbf)

S02644

SST

B02434

B02435

120

°

120

°

B02436

120

°

120

°

A02727

Front Mark

EM–54

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

1408

(n)

Using SST, push the 2 oil seals in as far as they can go.
SST

09316–60011 (09316–00011, 09316–00051)

(o)

Rotate the camshaft with a wrench at the hexagon posi-
tion, bring the forward straight pin up.

(p)

Loosen the 12 bearing cap bolts as shown, until they can
be turned by hand; retighten in several passes.
Torque: 20 N·m (200 kgf·cm, 15 ft·lbf)

(q)

Turn the camshaft 1/3 of a revolution.

(r)

Loosen the 8 bearing cap bolts as shown, until they can
be turned by hand; retighten in several passes.
Torque: 20 N·m (200 kgf·cm, 15 ft·lbf)

(s)

Turn the camshaft a further 1/3 of a revolution.

(t)

Loosen the 8 bearing cap bolts as shown, until they can
be turned by hand; retighten in several passes.
Torque: 20 N·m (200 kgf·cm, 15 ft·lbf)

4.

CHECK AND ADJUST VALVE CLEARANCE
(See page

EM–5

)

5.

INSTALL NO.4 TIMING BELT COVER

Install the timing belt cover with 4 bolts.

Torque: 8.0 N·m (80 kgf·cm, 71 in.·lbf)

6.

INSTALL CAMSHAFT TIMING PULLEYS

(a)

Install the exhaust camshaft timing pulley.
(1)

Align the camshaft knock pin with the groove in the
pulley, and slide on the pulley.

(2)

Slide the timing pulley on the camshaft, facing the
front mark forward.

(3)

Hold the hexagon portion of the camshaft with a
wrench, and tighten the timing pulley bolt.

Torque: 81 N·m (810 kgf·cm, 60 ft·lbf)

A02698

Seal Packing

A11122

A11123

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

EM–55

1409

(b)

Install the VV–i (intake camshaft timing) pulley.
(See page

EM–23

)

7.

CONNECT TIMING BELT TO CAMSHAFT TIMING
PULLEYS (See page

EM–23

)

8.

INSTALL NO.1 AND NO.2 CYLINDER HEAD COVERS

(a)

Remove the any old packing (FIPG) material.

(b)

Apply seal packing to the cylinder head as shown in the
illustration.
Seal packing: Part No. 08826–00080 or equivalent

(c)

Install the gaskets to the cylinder head covers.

(d)

Install the cylinder head covers with the 12 bolts and 4
nuts.
Torque: 8.5 N·m (85 kgf·cm, 75 in.·lbf)

9.

INSTALL INTAKE MANIFOLD ASSEMBLY

(a)

Install a new gasket and the intake manifold and delivery
pipe assembly with the 7 bolts and 2 nuts.
Torque: 28 N·m (280 kgf·cm, 21 ft·lbf)

(b)

Pass the water bypass hose between the No.2, No.3 in-
take ports of the manifold and delivery pipe.

(c)

Install the manifold stay with the 2 bolts.
Torque: 40 N·m (400 kgf·cm, 30 ft·lbf)

(d)

Install the starter wire to the manifold stay.

10.

INSTALL FUEL PRESSURE PULSATION DAMPER
(See page

SF–27

)

11.

CONNECT ENGINE WIRE TO CYLINDER HEAD

(a)

Install the engine wire protector with the 3 nuts.

(b)

Using a 5 mm hexagon wrench, install the bolt holding the
engine wire protector to the No.2 cylinder head cover.

(c)

Connect the 6 injector connectors.

HINT:
The Nos.1, 3, 5 injector connectors and dark gray, and the
Nos.2, 4, 6 injector connectors are brown.
(d)

Connect the camshaft timing oil control valve connector.

(e)

Connect the camshaft position sensor connector.

(f)

Connect the ECT sensor connector.

A02733

Clamp Bracket

A02811

A02732

(v)

(s)

(t)

(u)

(u)

(t)

(s)

EM–56

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

1410

(g)

Connect the 2 knock sensor connector.

(h)

Connect the starter connector.

(i)

Connect the oil pressure switch connector.

(j)

Connect the oil level sensor connector.

(k)

Install the clamp bracket to the intake manifold.

(l)

Connect the 2 wire clamps to the No.1 oil pipe and clamp
bracket on the intake manifold.

(m)

Install the 2 ground terminals to the intake manifold.
Tighten so that each calking part should face inside.

(n)

Install the clamp bracket to the water pump.

(o)

Connect the generator connector.

(p)

Connect the crankshaft position sensor connector.

(q)

Connect the heated oxygen sensor (bank 1 sensor 1)
connector.

(r)

Secure the engine wire with the clamp.

(s)

Install the 2 hose clamps to the cylinder head and oil filter
bracket.

(t)

Install the heated oxygen sensor (bank 2 sensor 1) con-
nector and engine wire clamp to the hose clamps.

(u)

Install the 2 water bypass hoses to the hose clamps on
the cylinder head and oil filter bracket.

(v)

Install the ground strap to the cylinder head.

12.

INSTALL SPARK PLUGS

13.

INSTALL IGNITION COILS AND HIGH–TENSION
CORD SET ASSEMBLY (See page

IG–9

)

14.

INSTALL NO.3 TIMING BELT COVER
Torque: 8.0 N·m (80 kgf·cm, 71 in.·lbf)