Lexus SC300 / Lexus SC400. Manual — part 351

V01868

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–25

23. REINSTALL THEFT DETERRENT HORN
(a) Install the theft deterrent horn with the bolt.
(b) Connect the connector.

24. REINSTALL RH CYLINDER HEAD COVER
(a) Remove 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 gasket to the cylinder head cover.
(d) Install the seal washer to the bolt.
(e) Install the cylinder head cover with the 8 bolts.

Torque: 5.9 N

⋅

m (60 kgf

⋅

cm, 52 in.

⋅

lbf)

(f) Connect the 4 high–tension cords to the spark plugs.
(g) Connect the front high–tension cord clamp to the lower

high–tension cord cover.

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

high–tension cord clamp.

(i) Install

the 2 bolts holding the high–tension cord clamps to the

cylinder head cover.

(j) Connect

the 5 high–tension cords to the front side of the front

high–tension cord clamp.

(k) Connect

the No. 2 high–tension cord to the cord clamp on the

front high–tension cord clamp.

EG–26

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1UZ–FE ENGINE

ENGINE MECHANICAL

25. REINSTALL LH CYLINDER HEAD COVER
(a) Remove 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 gasket to the cylinder head cover.
(d) Install the seal washer to the bolt.
(e) Install the cylinder head cover with the 8 bolts.

Torque: 5.9 N

⋅

m (60 kgf

⋅

cm, 52 in.

⋅

lbf)

(f) Connect the 2 engine wire connectors.
(g) Connect the 4 injector connectors.

(h) Install the engine wire protector to the 2 brackets on the

delivery pipe.

(i)

Connect the 4 high–tension cords to the spark plugs.

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

high–tension cord cover.

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

high–tension cord clamp.

(l) Install

the 2 bolts holding the high–tension cord clamps to the

cylinder head cover.

(m) Connect the 5 high–tension cords to the front side of the front

high–tension cord clamp.

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–27

(n) Connect

the No. 1 high–tension cord to the cord clamp on the

front high–tension cord clamp.

26. REINSTALL THROTTLE BODY
(a) Disconnect the following hoses:

(1) PCV hose to throttle body
(2) Water bypass hose to throttle body

(b) Install a new gasket and throttle body with the 2 bolts and 2

nuts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

(c) Install the water bypass pipe (from the rear bypass joint) to

the clamp on the engine wire cover.

(d) Connect the following hoses:

(1) Water bypass hose to IAC valve
(2) California:

Vacuum hose from throttle body

(3) Except

California:

3 vacuum hoses from throttle body

EG–28

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1UZ–FE ENGINE

ENGINE MECHANICAL