Lexus SC300 / Lexus SC400. Manual — part 360

(d) Using SST, align the timing marks of the LH camshaft timing

pulley and timing belt rear plate.
SST 09278–54012

(e) Check that the timing belt has tension between the

crankshaft timing pulley and LH camshaft timing pulley.

14. CONNECT TIMING BELT TO RH CAMSHAFT TIMING

PULLEY

(a) Remove any oil or water on the RH camshaft timing pulley

and water pump pulley, and keep them clean.

(b) Using SST, slightly turn the RH camshaft timing pulley

clockwise. Align the installation mark on the timing belt with
the timing mark of the camshaft timing pulley, and hang the
timing belt on the RH camshaft timing pulley.
SST 09278–54012

(c) Using SST, align the timing marks of the RH camshaft timing

pulley and timing belt rear plate.
SST 09278–54012

(d) Check that the timing belt has tension between the RH

camshaft timing pulley and LH camshaft timing pulley.

15. SET TIMING BELT TENSIONER
(a) Using

a

press, slowly press in the push rod using 981 – 9,807

N (100 – 1,000 kgf, 220 – 2,205 lbf) of force.

(b) Align the holes of the push rod and housing, pass a 1.27 mm

hexagon wrench through the holes to keep the setting
position of the push rod.

(c) Release the press.

(d) Install the dust boot to the belt tensioner.

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–63

16. INSTALL TIMING BELT TENSIONER
(a) Temporarily install the belt tensioner with the 2 bolts.
(b) Alternately tighten the 2 bolts.

Torque: 26 N

⋅

m (270 kgf

⋅

cm, 20 ft

⋅

lbf)

(c) Using pliers, remove the 1.27 mm hexagon wrench from the

belt tensioner.

17. CHECK

VALVE

TIMING

(a) Slowly turn the crankshaft pulley 2 revolutions from TDC to

TDC.
NOTICE: Always turn the crankshaft pulley clockwise.

(b) Check

that each pulley aligns with the timing marks as shown

in the illustration.
If the timing marks do not align, remove the timing belt and
reinstall it.

18. INSTALL

SPARK

PLUGS

Using a 16 mm plug wrench, install the 8 spark plugs.

Torque: 18 N

⋅

m (180 kgf

⋅

cm, 13 ft

⋅

lbf)

EG–64

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1UZ–FE ENGINE

ENGINE MECHANICAL

19. INSTALL DRIVE BELT TENSIONER

Install the belt tensioner with the bolt and 2 nuts.

Torque: 16 N

⋅

m (160 kgf

⋅

cm, 12 ft

⋅

lbf)

HINT: Use bolt 106 mm (4.18 in.) in length.

20. INSTALL

GENERATOR

(a) Install the generator and transmission oil cooler pipe bracket

with the bolt and nut.

Torque: 37 N

⋅

m (380 kgf

⋅

cm, 27 ft

⋅

lbf)

(b) Connect the generator connector.
(c) Connect the generator wire with the nut and cap.

21. INSTALL RH DISTRIBUTOR HOUSING

Install the distributor housing with the 3 bolts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

HINT:

•

The RH distributor housing is marked with “R”.

•

Each bolt length is indicated in the illustration.

Bolt length:

38 mm (1.50 in.) for A
96 mm (3.78 in.) for B

22. INSTALL LH DISTRIBUTOR HOUSING

Install the distributor housing with the 3 bolts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

HINT:

•

The LH distributor housing is marked with “L”.

•

Each bolt length is indicated in the illustration.

Bolt length:

38 mm (1.50 in.) for A
80 mm (3.15 in.) for B

23. INSTALL

DISTRIBUTOR

ROTORS

(a) Align

the protrusion of the distributor rotor with the groove the

camshaft timing pulley.

(b) Install the distributor rotor with the 2 bolts. Install the 2

distributor rotors.

Torque: 3.8 N

⋅

m (39 kgf

⋅

cm, 34 in.

⋅

lbf)

–

1UZ–FE ENGINE

ENGINE MECHANICAL

EG–65

24. INSTALL

DISTRIBUTOR CAPS

Install

the distributor cap with the 3 bolts. Install the 2 distribu-

tor caps.

Torque: 3.8 N

⋅

m (39 kgf

⋅

cm, 34 in.

⋅

lbf)

25. INSTALL RH NO.2 TIMING BELT COVER
(a) Install the 4 gaskets to the timing belt cover.
(b) Install the wire grommet to the timing belt cover.
(c) Fit the timing belt cover, matching it with the hydraulic pump.
(d) Fit the timing belt cover holes, matching them with the 2

grommets on the distributor cap.

(e) Install the timing belt cover with the 5 bolts.

Torque:

18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf) for 12 mm head

HINT (for 12 mm head): Use bolts 106 mm (4.17 in.) in length.

(f)

Install the wire clamp to the timing belt cover.

(g) Install the camshaft position sensor connector to the ignition

coil bracket.

26. INSTALL LH NO.2 TIMING BELT COVER
(a) Install the 2 gaskets to the timing belt cover.
(b) Run

the camshaft position sensor wire through the timing belt

cover hole.

(c) Fit the timing belt cover, matching it with the hydraulic pump.
(d) Fit the timing belt cover holes, matching them with the 2

grommets on the distributor cap.

(e) Install the timing belt cover and connector bracket with the 3

bolts.

(f)

Install the wire grommet to the timing belt cover.

(g) Install

the

camshaft

position sensor

connector to the

connector bracket.

EG–66

–

1UZ–FE ENGINE

ENGINE MECHANICAL