Lexus SC300 / Lexus SC400. Manual - part 451

(c)  Install the four semi–circular plugs.

11.  INSTALL CYLINDER HEAD COVERS

(a)  Remove any oil packing (FIPG) material.
(b) Apply 

seal packing to the cylinder heads as shown in the

figure.

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. Install the cylinder

head cover with the eight bolts. Uniformly tighten the
bolts. Install the two cylinder head covers

Torque: 5.9 N

⋅

m (60 kgf

⋅

cm, 52 in.

⋅

lbf)

EM–102

–

ENGINE MECHANICAL

Cylinder Heads

12.  INSTALL ENGINE HANGERS

Install the engine hanger with the two bolts.
Install the two engine hangers.

Torque: 37 N

⋅

m (380 kgf

⋅

cm, 27 ft

⋅

lbf)

13.  CONNECT GROUND STRAP TO RH CYLINDER HEAD
14.  INSTALL ENGINE WIRE TO RH CYLINDER HEAD

Install the engine wire with the two bolts.

15.  INSTALL ENGINE WIRE TO LH CYLINDER HEAD

Install the engine wire with the five bolts.

16.  INSTALL EGR PIPE TO RH EXHAUST MANIFOLD

Install a new gasket and the EGR pipe with the two new nuts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

17.  INSTALL OIL DIPSTICK AND GUIDE FOR ENGINE

(a)  Install a new O–ring to the dipstick guide.
(b)  Apply a light of engine oil on the O–ring.
(c) Push 

in 

the dipstick guide into the guide hole of the No.1

oil pan.

(d)  Install the dipstick guide with the bolt.
(e)  Install the oil dipstick.

18.  INSTALL OIL DIPSTICK AND GUIDE FOR A/T

–

ENGINE MECHANICAL

Cylinder Heads

EM–103

19.  INSTALL REAR WATER BY–PASS JOINT

(a)  Install two new gaskets and the water by–pass joint with

the four nuts. Alternately tighten the nuts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

(b)  Install the bolt holding the water by–pass pipe to the

engine hanger.

20.  INSTALL FRONT WATER BY–PASS JOINT

(a)  Install two new gaskets and the water by–pass joint with

the four nuts. Alternately tighten the nuts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

(b)  Install the engine wire clamp with the bolt.
(c)  Connect the following connectors:

(1)

Water temperature sensor connector

(2)

Cold start injector time switch connector

(3)

Water temperature sender gauge connector

21. INSTALL 

INTAKE 

MANIFOLD

(a)  Place two new gaskets on the cylinder heads with the

white painted mark facing upward.

NOTICE: Align the port holes of the gasket and cylinder
head. Be careful of the installation direction.

(b)  Place the intake manifold in position on the cylinder

head with the arrow mark facing forward.

NOTICE: Be careful of the installation direction.
(c)  Install and uniformly tighten the six mounting bolts and

four mounting nuts.

Torque: 18 N

⋅

m (185 kgf

⋅

cm, 13 ft

⋅

lbf)

HINT: Use bolts 30 mm (1.18 in.) in length.

EM–104

–

ENGINE MECHANICAL

Cylinder Heads

22.  INSTALL DELIVERY PIPES AND INJECTORS

(a)  Install the grommet and a new O–ring to each injector.

(b) While  turning  the  Injector  clockwise  and

counterclockwise, push it to delivery pipe. Install the
eight injectors.

(c)  Position the injector connector outward.

(d)  Place the eight insulators and four spacers in positions

on the intake manifold.

(e)  Place the eight injectors and two delivery pipes

assembly in position on the intake manifold.

(f) Temporarily 

install 

the 

connector bracket and four

mounting nuts.

(g)  Check that the injectors rotates smoothly.
(h)  Position the injector connectors outward.

–

ENGINE MECHANICAL

Cylinder Heads

EM–105