Lexus GS300/400 (2000 year). Service manual — part 99

BR0JI–07

W00742

W00743

BR–16

–

BRAKE

FRONT BRAKE PAD

2124

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

–

BRAKE

FRONT BRAKE PAD

BR–17

2125

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

BR0JJ–07

F01623

11 (110, 8)

34 (350, 25)

Bleeder Plug

Gasket

Brake Caliper

Anti–squeal Shim

Pad Support Plate

Inner Pad

Inner Anti–squeal
Shim

Outer Pad

Anti–squeal Spring

Boot

Piston Seal

Piston

Set Ring

Sliding Bushing

Pad Support Plate

Sliding Pin

Dust Boot

Torque Plate

Disc

N·m (kgf·cm, ft·lbf) : Specified torque

Lithium soap base glycol grease

Disc brake grease

Non–reusable part

30 (310, 22)

118 (1,200, 87)

BR–18

–

BRAKE

FRONT BRAKE CALIPER

2126

FRONT BRAKE CALIPER

COMPONENTS

BR0JK–03

F01624

–

BRAKE

FRONT BRAKE CALIPER

BR–19

2127

REMOVAL

1.

DISCONNECT FLEXIBLE HOSE

Remove the union bolt and 2 gaskets from the caliper, then dis-
connect 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, install the flexible hose lock securely
in the lock hole in the caliper.
2.

REMOVE CALIPER

(a)

Hold the sliding pin and loosen the 2 installation bolts.
Torque: 34 N·m (350 kgf·cm, 25 ft·lbf)

(b)

Remove the 2 installation bolts.

(c)

Remove the caliper from the torque plate.

3.

REMOVE 2 ANTI–SQUEAL SPRINGS

4.

REMOVE 2 BRAKE PADS WITH 4 ANTI–SQUEAL
SHIMS

5.

REMOVE 4 PAD SUPPORT PLATES