Lexus SC300 / Lexus SC400. Manual - part 361

27.  INSTALL DRIVE BELT IDLER PULLEY

Install the idler pulley and cover plate with the bolt.

Torque: 37 N

⋅

m (380 kgf

⋅

cm, 27 ft

⋅

lbf)

28.  INSTALL HIGH–TENSION CORDS, CORD CLAMPS AND

CORD COVER ASSEMBLY

(a) Connect the high–tension cords to the spark plugs,

distributor caps and RH ignition coil.

(b)  Install the lower high–tension cord cover with the bolt.

(c)  Connect the RH front high–tension cord clamp to the lower

high–tension cord cover.

(d)  Place the RH front high–tension cord clamp to the RH rear

high–tension cord clamp.

(e)  Install the 2 bolts holding the RH high–tension cord clamps

to the RH cylinder head cover.

(f) 

Connect the No.2 high–tension cord to the cord clamp on the
RH front high–tension cord clamp.

(g)  Connect the LH front high–tension cord clamp to the lower

high–tension cord cover.

(h)  Place the LH front high–tension cord clamp to the LH rear

high–tension cord clamp.

(i) 

Install the 2 bolts holding the LH high–tension cord clamps
to the LH cylinder head cover.

(j) 

Connect the No.1 high–tension cord to the cord clamp on the
LH front high–tension cord clamp.

29.  INSTALL RH NO.3 TIMING BELT COVER
(a)  Install the 3 gaskets to the timing belt cover.
(b)  Fit the portion A of the timing belt cover, matching it with the

lower high–tension cord cover.

(c)  Install the timing belt cover with the 4 bolts.

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–67

30.  INSTALL VSV FOR EVAP SYSTEM

Install the VSV with the 2 bolts.

31.  INSTALL LH NO.3 TIMING BELT COVER
(a)  Install the 3 gaskets to the timing belt cover.
(b)  Install the cord grommet to the high–tension cord (from the

LH ignition coil).

(c)  Install the cord grommet to the timing belt cover.
(d)  Fit the portion A of the timing belt cover, matching it with the

lower high–tension cord cover.

(e)  Install the timing belt cover with the 4 bolts.

32.  INSTALL RH ENGINE WIRE COVER
(a)  Fit portions A and B of the engine wire cover, matching them

with the lower high–tension cord cover and No.3 timing belt
cover.

(b)  Install the timing belt cover with the bolt.

33.  INSTALL LH ENGINE WIRE COVER
(a) Connect 

portions A and B of the engine wire cover to the wire

brackets.

(b)  Set the VSV (for the fuel pressure) wire in original position.
(c)  Fit portions C and D of the engine wire cover, matching them

with the lower high–tension cord cover and No.3 timing belt
cover.

(d)  Install the timing belt cover with the 2 bolts.

34.  INSTALL UPPER HIGH–TENSION CORD COVER
(a)  Fit portion A of the upper high–tension cord cover matching

the top of the lower high–tension cord cover.

EG–68

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1UZ–FE ENGINE

ENGINE MECHANICAL

(b)  Push the front side of the upper high–tension cord cover, and

fit the front side claw groove of the upper high–tension cord
cover to the claw of the lower high –tension cord cover.

(c)  Install the upper high–tension cord cover with the 2 bolts.

35.  INSTALL LH IGNITION COIL
(a)  Install the ignition coil with the 2 bolts.

(b)  Connect the following connectors and cord:

(1)  Ignition coil connector
(2)  Noise filter connector
(3) High–tension 

cord

36.  INSTALL INTAKE AIR CONNECTOR
(a)  Connect the intake air connector to the throttle body.
(b)  Install the hose clamp and bolt.

(c)  Connect the following hoses:

(1)  Air hose to IAC valve
(2) Air 

hose (from air control valve on PS pump) to intake air

connector.

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–69

37.  INSTALL AIR CONDITIONING (A/C) COMPRESSOR
(a)  Install the A/C compressor, compressor stay and ground

cable with the nut and 3 bolts.

Torque:

49 N

⋅

m (500 kgf

⋅

cm, 36 ft

⋅

lbf) for bolt

29 N

⋅

m (300 kgf

⋅

cm, 22 ft

⋅

lbf) for nut

(b)  Connect the A/C compressor connector.

38. INSTALL 

RADIATOR 

ASSEMBLY

(a)  Install the 2 lower radiator supports to the radiator.

(b)  Place the radiator assembly on the body bracket.
(c) Slightly 

lift the radiator, and connect the 2 oil cooler hoses (for

cooling fan) to the hose clamp on the radiator fan shroud.

(d)  Install the upper radiator support with the 2 bolts and screw.

Install the 2 upper radiator supports.

Torque: 12 N

⋅

m (120 kgf

⋅

cm, 9 ft

⋅

lbf)

EG–70

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1UZ–FE ENGINE

ENGINE MECHANICAL