2000 LEXUS GS400 wheel

AT06A±01
D01049
Oil Cooler Pipe
Connector and Wire Harness
Level Gauge
Torque Converter Clutch
Flywheel Housing
Under CoverPlug for Line
Pressure Test
Front and Center Exhaust PipePropeller Shaft Assembly
Heated Oxygen Sensor
Pipe Support BracketRH Front TWC
Engine Under CoverHeat Insulator
Ground CableHeat Insulator
GasketO±Ring x6Adjusting Washer
Filler Pipe
44 (450, 33)
79 (805, 58)
37 (375, 27)
79 (805, 58)
13 (130, 9)
37 (380, 27)
18 (185, 13)
44 (450, 33)
44 (450, 33)
62 (630, 46)
62 (630, 46)
72 (730, 53)
37 (380, 27)
48 (490, 35)
44 (450, 33)44 (450, 33)
5.4 (55, 48 in.´lbf)
5.4 (55, 48 in.´lbf)
Heat Insulator
26 (270, 20)

Gasket
LH Front TWC
44 (450, 33)

Gasket

Gasket


















N´m (kgf´cm, ft´lbf) : Specified torque
Non±reusable part
Heat Insulator
5.4 (55, 48 in.´lbf)
44 (450, 33)
44 (450, 33)

O±Ring
Heated Oxygen
SensorFront Floor
Center Brace
7.4 (75, 65 in.´lbf)
x6
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION UNIT (1UZ±FE)
AT±33
1981 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
AUTOMATIC TRANSMISSION UNIT (1UZ±FE)
COMPONENTS

D01052
D01044
D01002
D01053
D01004
± AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION UNIT (1UZ±FE)
AT±35
1983 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
6. REMOVE HEAT INSULATOR
Remove the 2 nuts, 3 bolts and 2 heat insulators.
7. REMOVE BOLT AND FILLER PIPE
HINT:
At the time of installation, please refer to the following item.
Replace the used O±ring with a new one.
8. REMOVE PROPELLER SHAFT
(See page PR±4)
9. DISCONNECT SHIFT CONTROL ROD
Remove the nut and disconnect the rod.
Torque: 13 N´m (130 kgf´cm, 9 ft´lbf)
10. DISCONNECT OIL COOLER PIPE
(a) Loosen the 2 union nuts from the transmission.
Torque: 44 N´m (450 kgf´cm, 33 ft´lbf)
NOTICE:
Be careful not to damage the oil cooler pipe.
(b) Disconnect the 3 set bolts of the clamp.
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(c) Disconnect the 2 oil cooler pipes from the transmission.
11. REMOVE TORQUE CONVERTER CLUTCH MOUNT-
ING BOLT
(a) Remove the 2 bolts and flywheel housing under cover.
Torque: 18 N´m (185 kgf´cm, 13 ft´lbf)

BE0FZ±08
I04195
I04196
6
I04197
BE±250
± BODY ELECTRICALHORN SYSTEM
2551 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
INSPECTION
1. INSPECT HORN SWITCH
(a) Disconnect the negative (±) terminal from the battery.
(b) Remove the left and right covers from the steering wheel.
(c) Using a torx socket wrench, loosen the 2 bolts.
(d) Pull up the horn pad and place it on the steering column,
as shown.
HINT:
Do not disconnect the connector from the horn pad.
(e) Disconnect the connector from the slip ring.
(f) Check that no continuity exists between terminal 6 of the
connector and body ground.
(g) Check that continuity exists between terminal 6 of the
connector and body ground when the horn contact plate
is pressed against the steering spoke assembly.
If continuity is not as specified, repair or replace the steering
wheel or wire harness as necessary.
(h) Install the horn pad in place and using a torx socket
wrench, torque the 2 bolts.
Torque:
7.1 N´m (72 kgf´cm, 62 in.´lbf)
(i) Install the left and right covers.
(j) Connect the negative (±) terminal to the battery.
2. INSPECT HORN OPERATION
Connect the positive (+) lead from the battery to the terminal
and negative (±) lead to the horn body and check that the horn
blows.
If operation is not as specified, replace the horn.
3. INSPECT HORN SWITCH CIRCUIT
(See page DI±806)

BR0JI±07
W00742
W00743
BR±16
± BRAKEFRONT BRAKE PAD
2124 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
1. REMOVE FRONT WHEEL
2. INSPECT PAD LINING THICKNESS
Check the pad thickness through the caliper inspection hole
and replace the pads if they are not within the specification.
Minimum thickness: 1.0 mm (0.039 in.)
3. LIFT UP CALIPER
(a) Hold the sliding pin on the bottom and loosen the installa-
tion bolt.
(b) Remove the installation bolt.
(c) Lift up the caliper and suspend it securely.
HINT:
Do not disconnect the flexible hose from the caliper.
4. REMOVE 2 ANTI± SQUEAL SPRINGS
5. REMOVE 2 BRAKE PADS WITH 4 ANTI±SQUEAL
SHIMS
6. REMOVE 4 PAD SUPPORT PLATES
NOTICE:
The anti±squeal springs and support plates can be used
again provided that they have sufficient rebound, no de-
formation, cracks or wear, and have had all rust, dirt and
foreign particles cleaned off.
7. CHECK DISC THICKNESS AND RUNOUT
(See page BR±21)
8. INSTALL 4 PAD SUPPORT PLATES
9. INSTALL NEW PADS
NOTICE:
When replacing worn pads, the anti±squeal shims must be
replaced together with the pad.
(a) Install the 2 anti±squeal shims to each pad.
HINT:
Apply disc brake grease to both sides of the inner anti±squeal
shims (See page BR±15).
(b) Install the inner pad with the pad wear indicator plates fac-
ing downward.
(c) Install the outer pad.
NOTICE:
There should be no oil or grease adhering to the friction
surfaces of the pads or the disc.
(d) Install the 2 anti±squeal springs.

W00744
± BRAKEFRONT BRAKE PAD
BR±17
2125 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
10. INSTALL CALIPER
(a) Draw out a small amount of brake fluid from the reservoir.
(b) Press in the pistons with a hammer handle or similar im-
plement.
HINT:
If the pistons are difficult to push in, loosen the bleeder plug and
push in the pistons while letting some brake fluid escape.
(c) Install the caliper.
(d) Hold the sliding pin and torque the installation bolt.
Torque: 34 N´m (350 kgf´cm, 25 ft´lbf)
11. INSTALL FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
12. DEPRESS BRAKE PEDAL SEVERAL TIMES
13. CHECK THAT FLUID LEVEL IS AT MAX LINE

BR0JQ±03
F07245
F04917
A
A B
B
± BRAKEREAR BRAKE PAD
BR±25
2133 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REPLACEMENT
1. REMOVE REAR WHEEL
Remove the rear wheel and temporarily fasten the disc with the
3 hub nuts.
2. INSPECT PAD LINING THICKNESS
Check the pad thickness through the caliper inspection hole
and replace pads if the thickness is not within the specification.
Minimum thickness: 1.0 mm (0.039 in.)
3. REMOVE ANTI±SQUEAL SPRING AND PAD GUIDE
PIN
(a) Raise the ºBº portion with hand, push up the ºAº portion
and disengage the anti±squeal spring from brake caliper.
(b) Remove the anti±squeal spring.
NOTICE:

Do not deform the clip and anti±squeal spring.

The clip and anti±squeal spring can be used again
provided that they have sufficient rebound, no±de-
formation, cracks or wear, and have had all rust, dirt
and foreign particles cleaned off.
(c) Remove the clip and pad guide pin.
4. REMOVE PADS AND ANTI±SQUEAL SHIMS
(a) Remove the 2 pads.
(b) Remove the 4 anti±squeal shims from each pad.
5. CHECK DISC THICKNESS AND RUNOUT
(See page BR±30)
6. INSTALL NEW PADS
NOTICE:
When replacing worn pads, the anti±squeal shims must be
replaced together with the pads.
(a) Apply disc brake grease to both sides of inner anti±squeal
shims (See page BR±24).

F01635
Direction of disc rotation for
forward movement
F01636
F07232
AB
Claw
BR±26
± BRAKEREAR BRAKE PAD
2134 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
(b) Install the 2 anti±squeal shims on each pad.
HINT:
Make sure the arrows on the inner anti±squeal shims facing to
the direction of disc rotation as shown in the illustration.
(c) Draw out a small amount of brake fluid from the reservoir.
(d) Press in the pistons with a monkey wrench handle or
equivalent.
HINT:

Tape the monkey wrench handle before use.

If the piston is difficult to push in, loosen the bleeder plug
and push in the piston while letting some brake fluid es-
cape.
(e) Install the 2 pads.
7. I N S TA L L PA D G U I D E P I N A N D A N T I ± S Q U E A L
SPRING
(a) Install the pad guide pin and clip.
(b) Install the anti±squeal spring.
HINT:

Ensure that the claw of the anti±squeal spring is raised up
on the caliper securely.

Ensure that there is no gap between the pad guide pin
and anti±squeal spring.

Ensure that ºAº and ºBº portions of anti±squeal spring are
attached to the pad.
8. INSTALL FRONT WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
9. DEPRESS BRAKE PEDAL SEVERAL TIMES
10. CHECK THAT FLUID LEVEL IS AT MAX LINE

BR0JS±06
F01639
BR±28
± BRAKEREAR BRAKE CALIPER
2136 Author: Date:
2000 LEXUS GS300/GS400 (RM718U)
REMOVAL
1. REMOVE REAR WHEEL
Torque: 103 N´m (1,050 kgf´cm, 76 ft´lbf)
2. DISCONNECT FLEXIBLE HOSE
Remove the union bolt and gasket from the caliper, then discon-
nect the flexible hose from the caliper. Use a container to catch
brake fluid as it drains out.
Torque: 30 N´m (310 kgf´cm, 22 ft´lbf)
HINT:
At the time of installation, please refer to the following item.
Install the flexible hose lock securely in the lock hole in the cali-
per.
3. REMOVE CALIPER
(a) Remove the 2 installation bolts.
Torque: 104 N´m (1,065 kgf´cm, 77 ft´lbf)
(b) Remove the caliper.
4. REMOVE BRAKE PADS (See page BR±25)
(a) Remove the anti±squeal spring.
(b) Remove the clip and pad guide pin.
(c) Remove the 2 pads with the 4 anti±squeal shims.