Lexus SC300 / Lexus SC400. Manual — part 455

COMPONENTS FOR REMOVAL AND
INSTALLATION OF ENGINE WITH
TRANSMISSION (Cont’d)

REMOVAL OF ENGINE WITH
TRANSMISSION

1. REMOVE

BATTERY

CAUTION: Turn the ignition switch to ”LOCK”. Discon-
nect the cable from the negative (–) terminal of the bat-
tery. Wait at least 20 seconds before proceeding with
work.

2.

REMOVE ENGINE UNDER COVER

3.

DRAIN ENGINE COOLANT

4. DISCONNECT CONTROL CABLES FROM THROTTLE

BODY
Disconnect the following cables:

(1) Accelerator cable
(2) (A/T)

Throttle control cable

(3) Cruise control actuator cable

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ENGINE MECHANICAL

Cylinder Block

5.

REMOVE AIR CLEANER ASSEMBLY
(a) Disconnect the high–tension cord from the ignition coil.
(b) Disconnect the volume air flow meter connector.
(c) Disconnect the following hose:

(1) PS air hose from No. 4 timing belt cover
(2) PCV hose from No. 2 cylinder head cover

(d) Loosen the hose clamp holding the air cleaner hose to

the throttle body.

(e) Remove the three mounting bolts and air cleaner.

6.

REMOVE DRIVE BELT, FAN WITH FLUID COUPLING AND
WATER PUMP PULLEY
(a) Loosen the four nuts holding the fluid coupling to the

water pump.

(b) Loosen the drive belt tension by turning the drive belt

tensioner clockwise, and remove the drive belt.

(c) Remove the four nuts, fluid coupling and water pump

pulley.

7. REMOVE

RADIATOR

(a) Disconnect the following hoses:

(1) Reservior hose from radiator
(2) Upper radiator hose from water inlet
(3) Lower radiator hose from water outlet
(4) (A/T)

Two oil cooler hoses from radiator
Plug the hose ends.

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ENGINE MECHANICAL

Cylinder Block

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(b) Remove the two bolts, screw and upper radiator

support. Remove the two upper radiator supports.

(c) Lift out the radiator with the hoses.

8.

REMOVE CHARCOAL CANISTER
(a) Disconnect the vacuum hose and air hose from the

charcoal canister.

(b) Remove the charcoal canister.

9. DISCONNECT PS PUMP WITHOUT DISCONNECTING

HOSES
(a) Disconnect the following hoses:

(1) PS air hose from No. 4 timing belt cover
(2) PS air hose from air intake chamber

(b) Remove the bolt, nut and pump rear stay.
(c) Remove the two bolts, and disconnect the PS pump

from the engine.

HINT: Put aside the PS pump, and suspend it.

10. DISCONNECT A/C COMPRESSOR WITHOUT

DISCONNECTING HOSES
(a) Disconnect the compressor connector.
(b) Remove the three mounting bolts and nut.
(c) Remove the through bolt, and disconnect the

compressor from the engine.

HINT: Put aside the compressor, and suspend it.

11. DISCONNECT ENGINE WIRE AND HOSES

(a) Disconnect the brake booster vacuum hose from the

union.

(b) Disconnect the fuel return hose from the engine oil

dipstick guide clamp and No. 2 fuel pipe. Plug the hose
end.

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ENGINE MECHANICAL

Cylinder Block

(c) Disconnect the following connectors:

(1) Two connectors from engine room main wire
(2) Igniter

connector

(3) Theft deterrent horn connector

(d) Disconnect the wire harness from the two wire clamps.

(e) Using a 6 mm hexagon wrench, remove the bolt and

connector bracket.

(f) Disconnect the wire clamp and PS solenoid valve

connector.

(g) Disconnect the ground strap from the cylinder block.
(h) Disconnect the PS pressure switch connector.

(i)

Disconnect the following connectors:

(1) Ignition coil connector
(2) Noise filter connector

(j)

Remove the cap and nut, and disconnect the generator
wire.

(k) Disconnect the wire harness from the two wire clamps.

(l)

Disconnect the following hoses:

(1) Vacuum

hose

(from

VSV

for

heater

vale)

from

check valve.

(2) Heater water hose from heater water valve.
(3) Heater water hose from water by–pass pipe

(m) Disconnect the VSV connector.

(n) Disconnect the ground strap from the bracket on the

body.

(o) Remove the bolt holding the engine wire protector from

the body.

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ENGINE MECHANICAL

Cylinder Block

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