Lexus GS300/400 (2000 year). Manual — part 131

P11002

A11127

SST

A11126

5 mm
Hexagon
Wrench

A02662

Gasket

Union Bolt

Oil Control
Valve Filter

EM–18

–

ENGINE MECHANICAL (2JZ–GE)

TIMING BELT

1372

(a)

Alternately loosen the 2 bolts, and remove them, the ten-
sioner and dust boot.

(b)

Disconnect the timing belt from the camshaft timing pul-
leys.

12.

REMOVE EXHAUST CAMSHAFT TIMING PULLEY

Using SST, remove the bolt and timing pulley.

SST

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

13.

REMOVE ENGINE COVER

Remove the 4 nuts and engine cover.
14.

REMOVE THROTTLE BODY AND INTAKE AIR
CONNECTOR ASSEMBLY (See page

EM–5

)

15.

REMOVE NO.1 CYLINDER HEAD COVER

(a)

Using a 5 mm hexagon wrench, remove the bolts, and dis-
connect the engine wire protector from the No.2 cylinder
head cover.

(b)

Remove the nut, and disconnect the engine wire protec-
tor from the intake manifold.

(c)

Remove the 2 bolts, and disconnect the high–tension
cords with the clamp from the No.2 cylinder head.

(d)

Remove the 6 bolts, 2 nuts, No.1 cylinder head cover and
gasket.

16.

REMOVE CAMSHAFT TIMING OIL CONTROL VALVE
(See page

SF–43

)

17.

DISCONNECT NO.1 OIL PIPE

Remove the bolt, union bolt, oil control valve filter and 2 gas-
kets, and disconnect the No.1 oil pipe from the No.3 camshaft
bearing cap.

A02655

Drain Hole

Rotate

(30

°

)

DO NOT
REMOVE

A02650

Hold

Straight
Screw
Plug

Set Bolt

Seal Washer

Hexagon Wrench

A02745

SST

Bolt

–

ENGINE MECHANICAL (2JZ–GE)

TIMING BELT

EM–19

1373

18.

REMOVE VVT–i (INTAKE CAMSHAFT TIMING)
PULLEY

NOTICE:

The 5 bolts shown in the illustration determine the
backlash of the gear in the timing pulley, so do not re-
move them.
If any of the 5 bolts are removed, install a new cam-
shaft timing pulley assembly.

When removing the straight screw plug, follow the
prescribed procedure in order to avoid spilling oil on
the timing system parts.

(a)

Rotate the VVT–i pulley from left to right 2 to 3 times within
its range of movement (30

°

) and use a waste cloth to col-

lect the oil from the camshaft timing oil control valve instal-
lation hole.

NOTICE:
Approximately 20 cc (1.2 cu in.) of oil will be ejected, so
take care not to spill it.

(b)

Holding the hexagon portion of camshaft with a wrench.

(c)

Using a 14 mm hexagon wrench, remove the straight
screw plug and seal washer.

NOTICE:
Some oil may spill, so put a waster cloth below the plug
white doing the operation.
(d)

Using a 10 mm hexagon wrench, and remove the set bolt
and VVT–i pulley.

(e)

Remove the wrench.

19.

REMOVE CRANKSHAFT PULLEY

Using SST and bolt (diameter: 8 mm, pitch: 1.5 mm), remove
the crankshaft pulley.

SST

09950–50012 (09951–05010, 09552–05010,
09553–05020, 09554–05030)

Bolt: Part No. 90119–18001

NOTICE:
Do not turn the crankshaft pulley.
20.

REMOVE NO.1 TIMING BELT COVER

Remove the 5 bolts, timing belt cover and gasket.
21.

REMOVE TIMING BELT GUIDE

A02642

A02719

10 mm
Hexagon
Wrench

A02746

SST

Bolt

EM–20

–

ENGINE MECHANICAL (2JZ–GE)

TIMING BELT

1374

22.

REMOVE TIMING BELT

HINT:
(When re–using timing belt):
Draw an arrow on the timing belt in the direction of engine revo-
lution, and place matchmarks on the timing belt and crankshaft
timing pulley.

23.

REMOVE IDLER PULLEY

Using a 10 mm hexagon wrench, remove the pivot bolt, plate
washer and idler pulley.
24.

REMOVE CRANKSHAFT TIMING PULLEY

(a)

Remove the bolt and timing belt plate.

(b)

Remove the crankshaft timing pulley.

If the pulley cannot be removed by hand, use SST and bolt (di-
ameter: 8 mm, pitch: 1.5 mm) to remove the crankshaft timing
pulley.

SST

09950–50012 (09951–05010, 09952–05010,
09953–05020, 09954–05010)

Bolt: Part No. 90119–18001

NOTICE:

Do not scratch the sensor part the crankshaft timing
pulley.

Do not turn the timing pulley.

EM0D7–03

EM0126

No!

P02283

Turn

P02075

–

ENGINE MECHANICAL (2JZ–GE)

TIMING BELT

EM–21

1375

INSPECTION

1.

INSPECT TIMING BELT

NOTICE:

Do not bend, twist or turn the timing belt inside out.
Do not allow the timing belt to come into contact with
oil, water or steam.

Do not utilize timing belt tension when installing or re-
moving the mount bolt of the camshaft timing pulley.

If there are any defects, as shown in the illustrations, check the
following points.
(a)

Premature parting

Check for proper installation.

Check the timing cover gasket for damage and
proper installation.

(b)

If the belt teeth are cracked or damaged, check to see if
either camshaft is locked.

(c)

If there is noticeable wear or cracks on the belt face,
check to see if there are nicks on the side of the idler
pulley lock.

(d)

If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each pulley.

(e)

If there is noticeable wear on the belt teeth, check timing
cover for damage and check gasket has been installed
correctly and for foreign material on the pulley teeth.

If necessary, replace the timing belt.

2.

INSPECT IDLER PULLEY

(a)

Visually check the seal portion of the idler pulley for oil
leakage.

If leakage is found, replace the idler pulley.
(b)

Check the turning smoothness of the idler pulley.

If necessary, replace the idler pulley.
3.

INSPECT DRIVE BELT TENSIONER

Check the turning smoothness of the tensioner.
If necessary, replace the tensioner.

4.

INSPECT TIMING BELT TENSIONER

(a)

Visually check tensioner for oil leakage.

HINT:
If there is only the faintest trace of oil on the seal on the push
rod side, the tensioner is all right.
If leakage is found, replace tensioner.