Lexus SC300 / Lexus SC400. Manual - part 442

(c)  Remove the two bolts and gaskets, and disconnect the

EGR pipe from the air intake chamber.

(d)  Remove the four mounting bolts, eight mounting nuts

and following parts:

(1)

VSV for fuel pressure control system

(2)

(Exc. USA Spec.)
VSV for EGR system

(3)

A/T throttle cable bracket

(e)  Disconnect the check (”DIAGNOSIS”) connector from

the intake chamber.

(f)  Remove the air intake chamber and four gaskets.

(g) Remove 

the three bolts, the cold start injector, tube, lead

wire assembly and gasket.

21. DISCONNECT 

HEATER 

WATER 

HOSES

Disconnect the following hoses:

(1)

Water hose from water by–pass pipe

(2)

Water hose from rear water by–pass joint

22.  DISCONNECT FUEL INLET HOSE FROM LH DELIVERY

PIPE
Remove the pulsation damper and two gaskets, and discon-
nect the inlet hose.

23. DISCONNECT FUEL RETURN HOSE FROM FUEL

RETURN PIPE

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ENGINE MECHANICAL

Cylinder Heads

24.  DISCONNECT EGR PIPE FROM RH CYLINDER HEAD

Remove the bolt holding the EGR pipe to the RH cylinder
head, and disconnect the EGR pipe.

25.  DISCONNECT ENGINE WIRE FROM INTAKE MANIFOLD

Remove the two bolts, and disconnect the engine wire.

26.  DISCONNECT ENGINE WIRE FROM DELIVERY PIPES,

REAR WATER BY–PASS JOINT AND RH CYLINDER
HEAD
(a)  Remove the four bolts holding the engine wire to the

delivery pipes, and disconnect the engine wire from the
delivery pipes.

(b) Remove 

the two bolts holding the engine wire to the rear

water by–pass joint, and disconnect the engine wire
from the rear water by–pass joint.

(c) Remove 

the two bolts holding the engine wire to the rear

side of the RH cylinder head, and disconnect the engine
wire from the engine wire RH cylinder head.

(d)  Disconnect the two engine wire connectors from the

connector bracket on the front side of the LH delivery
pipe.

(e)  Disconnect the eight injector connectors.

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ENGINE MECHANICAL

Cylinder Heads

EM–67

27.  REMOVE FUEL RETURN PIPE

(a)  Remove the bolt holding the fuel return pipe to the rear

side of the LH cylinder head.

(b)  Remove the union bolt, two gaskets and return pipe.

28.  REMOVE DELIVERY PIPES AND INJECTORS

(a)  Remove the four nuts holding the delivery pipe to the

intake manifold.

(b)  Remove the connector bracket, the two delivery pipes,

eight injectors assembly, four spacers  and eight
insulators.

NOTICE: Be careful not to drop the injectors.

(c)  Remove the eight injectors from the delivery pipes.
(d)  Remove the O–ring and grommet from each injector.

29. REMOVE 

INTAKE 

MANIFOLD

Remove the six bolts, four nuts, intake manifold and two gas-
kets.

30.  REMOVE FRONT WATER BY–PASS JOINT

(a)  Disconnect the following connectors:

(1) Water temperature sensor connector
(2) Cold start injector time switch connector
(3) Water temperature sender gauge connector

(b)  Remove the bolt, and disconnect the engine wire clamp

from the water by–pass joint.

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ENGINE MECHANICAL

Cylinder Heads

(c)  Remove the four nuts, water by–pass joint and two

gaskets.

31.  REMOVE REAR WATER BY–PASS JOINT

(a)  Remove the bolt holding the water by–pass pipe to the

engine hanger.

(b)  Remove the four nuts, water by–pass joint and two

gaskets.

32.  REMOVE OIL DIPSTICK AND GUIDE FOR ENGINE

(a)  Remove the mounting bolt.
(b)  Pull out the dipstick guide together with the dipstick.
(c)  Remove the O–ring from the dipstick guide.

33.  REMOVE OIL DIPSTICK AND GUIDE FOR A/T

34.  REMOVE EGR PIPE

(a)  Remove the two nuts holding the EGR pipe to the RH

exhaust pipe.

(b)  Remove the EGR pipe and gasket.

35.  DISCONNECT GROUND STRAP FROM RH CYLINDER

HEAD

36. DISCONNECT 

ENGINE WIRE FROM RH CYLINDER HEAD

Remove the two bolts, and disconnect the engine wire.

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ENGINE MECHANICAL

Cylinder Heads

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