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
EM–66
–
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.
–
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.
EM–68
–
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.
–
ENGINE MECHANICAL
Cylinder Heads
EM–69
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