Lexus SC300 / Lexus SC400. Manual — part 440
CYLINDER HEADS
COMPONENTS FOR REMOVAL AND
INSTALLATION
EM–58
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ENGINE MECHANICAL
Cylinder Heads
COMPONENTS FOR REMOVAL AND
INSTALLATION (Cont’d)
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ENGINE MECHANICAL
Cylinder Heads
EM–59
REMOVAL OF CYLINDER HEADS
(See Components on pages
and 59)
1.
DISCONNECT TIMING BELT FROM CAMSHAFT TIMING
PULLEYS
(See steps 1 to 28 on pages
to 42)
2. REMOVE CAMSHAFT TIMING PULLEYS AND
HYDRAULIC PUMP
(See steps 29 and 31 on pages
HINT:
•
Be careful not to drop anything inside the timing belt
cover.
•
Do not allow the timing belt to come into contact with oil,
water or dust.
3.
DISCONNECT PS PUMP FROM LH CYLINDER HEAD
(a) Disconnect the vacuum hose from the air intake
chamber.
(b) Remove the three bolts and nut, and disconnect the PS
pump.
HINT: Put aside the PS pump, and suspend it.
4.
REMOVE CATALYTIC CONVERTERS (MAIN)
(a) Remove the four bolts holding the pipe support bracket
to the transmission.
(b) Remove the four bolts and nuts holding the catalytic
converters to the front exhaust pipe. Remove the pipe
support bracket.
(c) Disconnect the front exhaust pipe from the catalytic
converter, and remove the two gaskets.
(d) Remove the three nuts, catalytic converter and gasket.
Remove the two catalytic converters.
EM–60
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ENGINE MECHANICAL
Cylinder Heads
5.
REMOVE THROTTLE BODY COVER
(a) Remove the mounting cap nut.
(b) Loosen the two bolts, and remove the throttle body
cover.
6. DISCONNECT CONTROL CABLES FROM THROTTLE
BODY
Disconnect the following cables:
(1)
Accelerator cable
(2)
A/T throttle control cable
(3)
(w/ Cruise Control System)
Cruise control actuator cable
7.
REMOVE RH IGNITION COIL
Remove the two bolts and ignition coil.
8.
REMOVE WATER INLET AND INLET HOUSING
(a) Disconnect the water by–pass hose from the ISC valve.
(b) Remove the two bolts holding the water inlet housing to
the water pump.
(c) Pull out the water inlet and inlet housing assembly.
(d) Remove the O–ring from the water inlet housing.
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ENGINE MECHANICAL
Cylinder Heads
EM–61
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