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Lexus GS300/400 (2000 year). Manual - part 140

A02665

6 6

P02094

Upward

Cam Lobe

Notch

P12860

EX Side

IN Side

SST (B)

P12294

SST (A)

P11926

SST (A)

SST (B)

–

ENGINE MECHANICAL (2JZ–GE)

VALVE CLEARANCE

EM–7

1361

(c)

Check only the valves indicated as shown. Measure the
valve clearance. (See procedure in step (a))

12.

ADJUST VALVE CLEARANCE

(a)

Remove the adjusting shim.

Turn the camshaft so that the cam lobe for the valve
to be adjusted faces up.

Turn the valve lifter with a screwdriver so that the
notches are perpendicular to the camshaft.

Insert SST (B) gently from the inside as shown in the
illustration.

Using SST (A), hold the camshaft as shown in the
illustration.

SST

09248–55040 (09248–05410)

Using SST (A), press down the valve lifter and place
SST (B) between the camshaft and valve lifter. Re-
move SST (A).

SST

09248–55040 (09248–05410, 09248–05420)

HINT:

Apply SST (B) at slight angle on the side marked with ”7”
or ”9”, at the position shown in the illustration.

A02666

SST (A)

SST (B)

P10901

SST (B)

Magnetic Finger

EM0494

P11925

SST (A)

SST (B)

EM–8

–

ENGINE MECHANICAL (2JZ–GE)

VALVE CLEARANCE

1362

When the adjusting shim of the No.1 intake side replace,
remove the No.2 or No.3 camshaft bearing cap, and in-
sert SST as shown in the illustration.

Using a small screwdriver and a magnetic finger, remove
the adjusting shim.

(b)

Determine the replacement adjusting shim size according
to the following formula or Charts:

Using a micrometer, measure the thickness of the
removed shim.

Calculate the thickness of a new shim so the valve
clearance comes within specified value.
T .......... Thickness of used shim
A .......... Measured valve clearance
N .......... Thickness of new shim

Intake
N = T + (A – 0.20 mm (0.008 in.))
Exhaust
N = T + (A – 0.30 mm (0.012 in.))

Select a new shim with a thickness as close as pos-
sible to the calculated values.

HINT:
Shims are available in 17 sizes in increments of 0.050 mm
(0.0020 in.), from 2.500 mm (0.0984 in.) to 3.300 mm (0.1299
in.).

(c)

Install a new adjusting shim.

Place a new adjusting shim on the valve lifter, with
imprinted numbers facing down.

Press down the valve lifter with SST (A), and re-
move SST (B).

SST

09248–55040

13.

REINSTALL CYLINDER HEAD COVERS
(See page

EM–52

)

14.

RECONNECT ENGINE WIRE TO CYLINDER HEAD
COVERS

–

ENGINE MECHANICAL (2JZ–GE)

VALVE CLEARANCE

EM–9

1363

15.

REINSTALL SPARK PLUGS

16.

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

IG–9

)

17.

REINSTALL NO.3 TIMING BELT COVER

(a)

Install the gasket to the timing belt cover.

(b)

Using a 5 mm hexagon wrench, install the timing belt cov-
er with the 4 bolts.
Torque: 8.0 N·m (80 kgf·cm, 71 in.·lbf)

(c)

Install the oil filler cap.

18.

REINSTALL THROTTLE BODY AND INTAKE AIR CON-
NECTOR ASSEMBLY

(a)

Install a new gasket to the air intake chamber.

(b)

Place the throttle body together with the intake air con-
nector on the cylinder head.

(c)

Connect the vacuum hose (from actuator for ACIS) to the
No.1 vacuum pipe.

(d)

Connect the 2 water bypass hoses to the throttle body.

(e)

Install the 4 bolts and 2 nuts holding the intake air connec-
tor to the air intake chamber.
Torque: 28 N·m (280 kgf·cm, 21 ft·lbf)

(f)

Install the 2 nuts holding the throttle body bracket to the
cylinder head.
Torque: 21 N·m (210 kgf·cm, 15 ft·lbf)

(g)

Connect the air assist hose to the intake air connector.

(h)

Install the PCV hose to the intake air connector.

(i)

Install the EVAP hose (from charcoal canister) to the VSV
for EVAP.

(j)

Install the vacuum hose (from No.2 vacuum pipe) to the
No.1 vacuum pipe.

(k)

Install the throttle position sensor connector.

(l)

Install the accelerator pedal position sensor connector.

(m)

Install the throttle control motor connector.

(n)

Install the VSV connector for EVAP.

(o)

Secure the engine wire with the clamp on the throttle body
bracket.

(p)

Install the engine wire clamp with the clamp bracket of the
throttle body.

(q)

Connect the accelerator cable to the throttle body.

19.

REINSTALL INTAKE AIR RESONATOR

20.

REINSTALL ENGINE COVER

Install the engine cover with the 4 nuts.
21.

REFILL WITH ENGINE COOLANT

22.

START ENGINE AND CHECK FOR LEAKS

V00719

Adjusting Shim Selection Chart (Intake)

Intake valve clearance (Cold):
0.15 – 0.25 mm (0.006 – 0.010 in.)

EXAMPLE: The 2.800 mm (0.1102 in.) shim is installed, and
the measured clearance is 0.450 mm (0.0177 in.).
Replace the 2.800 mm (0.1102 in.) shim with a new No.12 shim.

New shim thickness mm (in.)

Shim
No.

Thickness

Shim
No.

HINT: New shims have the thickness
in millimeters imprinted on the face.

Installed Shim Thickness
mm (in.)

Measured Clearance
mm (in.)

EM–10

–

ENGINE MECHANICAL

(2JZ–GE)

VE CLEARANCE

1364

2000

LEXUS GS300/GS400 (RM718U)

Content .. 138 139 140 141 ..