Lexus SC300 / Lexus SC400. Service manual — part 379

ENGINE REMOVAL

EG24W–02

(See Components for Engine Removal and Installation)
1. REMOVE

BATTERY

CAUTION: Work must be started after 90 seconds from
the time the ignition switch is turned to the “LOCK” posi-
tion and the negative (–) terminal cable is disconnected
from the battery.

2. REMOVE

HOOD

3.

REMOVE ENGINE UNDER COVER

4.

DRAIN ENGINE COOLANT

5.

DRAIN ENGINE OIL

6.

REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tension-
er counterclockwise, and remove the drive belt.
HINT: The pulley bolt for the drive belt tensioner has a left–
hand thread.

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–139

7.

REMOVE THROTTLE BODY COVER

(a) Disconnect the EVAP hose from the hose clamp.
(b) Remove the cap nut.
(c) Loosen the 2 bolts, and remove the hose clamp and throttle

body cover.

8.

DISCONNECT CONTROL CABLES TO THROTTLE BODY
Disconnect the following cables:
(1)

Accelerator cable

(2)

Transmission throttle control cable

(3)

Cruise control actuator cable

9.

REMOVE AIR CLEANER

(a) Disconnect the VAF meter connector.
(b) Remove the hose clamp bolt holding the air cleaner hose to

the intake air connector.

(c) Remove the 4 bolts.
(d) Disconnect

the air cleaner hose from the intake air connector.

(e) Disconnect

the air duct from the air cleaner case, and remove

the air cleaner.

10. DISCONNECT VACUUM HOSE (A) (FROM PS AIR

CONTROL VALVE) FROM AIR INTAKE CHAMBER

11. REMOVE INTAKE AIR CONNECTOR
(a) Disconnect

the following hoses from the intake air connector:

(1) Air hose (from IAC valve)
(2) Air hose (from air control valve on PS pump)

(b) Remove the hose clamp bolt holding the intake air connector

to the throttle body.

(c) Remove the bolt and intake air connector.

EG–140

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1UZ–FE ENGINE

ENGINE MECHANICAL

12. REMOVE RADIATOR RESERVOIR TANK
(a) Disconnect the coolant level sensor connector.
(b) Disconnect the following hoses:

(1)

Reservoir hose from water inlet housing

(2)

Reservoir hose from radiator

(c) Remove the 2 bolts and reservoir tank bracket.
(d) Remove the bolt holding the reservoir tank to the radiator.
(e) Disconnect

the reservoir tank from the reservoir tank bracket,

and remove the reservoir tank.

13. REMOVE

RADIATOR

ASSEMBLY

(a) Disconnect the ECT sensor connector (for cooling fan).
(b) Disconnect the ECT sensor wire clamp from the radiator fan

shroud.

(c) Disconnect the following hoses:

(1)

2 oil cooler hoses (for cooling fan) from pipes

(2)

2 radiator hoses

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1UZ–FE ENGINE

ENGINE MECHANICAL

EG–141

(3)

2 oil cooler hoses (for transmission) from radiator

HINT: Plug the hose ends.

(4) Suction hose from hydraulic pump
(5) Pressure hose from hydraulic pump

(d) Remove the 2 bolts, screw and upper radiator support.

Remove the 2 upper radiator supports.

(e) Slightly lift the radiator, and disconnect the 2 oil cooler hoses

(for cooling fan) from the hose clamp on the radiator fan
shroud.

(f) Remove the radiator assembly.
(g) Remove the 2 lower radiator supports from the radiator.

14. DISCONNECT IGNITER CONNECTORS
(a) Disconnect the 2 igniter connectors.
(b) Disconnect the wire clamp from the body.

EG–142

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1UZ–FE ENGINE

ENGINE MECHANICAL