Lexus RX300 (MCU15). Service manual - part 168

BR1KM–01

F13364

Air Cleaner Assembly

Bracket

Clip

Master Cylinder

Clamp

Return Spring

Clevis

Reservoir Assembly

Pin

z Gasket

Brake Booster

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

z Non–reusable part

Clip

Clip

8.8 (90, 78 in.·lbf)

15 (155, 11)

13 (130, 9)

26 (265, 19)

LHD:

Clip

13 (130, 9)

13 (130, 9)

15 (155, 11)

15 (155, 11)

2–way

BR–24

–

BRAKE

BRAKE BOOSTER ASSEMBLY

LEXUS RX300   (RM785E)

COMPONENTS

F13267

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

z Non–reusable part

Return Spring

Pin

Master Cylinder

Clevis

Clip

Brake Booster

Clip

Bracket

Wiper Motor & Link
Assembly

Front Upper Suspension Brace

Outer Cowl Top Panel

Weatherstrip

Cowl Louver RH

Wiper Arm

Cowl Louver LH

Reservoir Assembly

Clip

13 (130, 9)

z Gasket

15 (155, 11)

15 (155, 11)

13 (130, 9)

Clip

7.0 (71, 62 in.·lbf)

24 (245, 18)

Wiper Pivot Guide 
No. 2 Bracket

RHD:

W/ Cruise Control :
Cruise Control Actuator

26 (265, 19)

8.8 (90, 78 in.·lbf)

Except Europe:

Brake Booster

8.8 (90, 78 in.·lbf)

80 (810, 59)

Bracket

–

BRAKE

BRAKE BOOSTER ASSEMBLY

BR–25

LEXUS RX300   (RM785E)

BR06H–05

F04968

BR–26

–

BRAKE

BRAKE BOOSTER ASSEMBLY

LEXUS RX300   (RM785E)

REMOVAL

1.

RHD: 
REMOVE OUTER COWL TOP PANEL (See page
BO–57)

2.

RHD w/ CRUISE CONTROL:
REMOVE CRUISE CONTROL ACTUATOR

(a)

Disconnect the cable from the throttle body.

(b)

Disconnect the connector and clamp.

(c)

Remove the 3 bolts and actuator.

3.

REMOVE MASTER CYLINDER (See page BR–16)

4.

RHD: 
REMOVE FRONT UPPER SUSPENSION BRACE

Remove the 4 nuts and front upper suspension brace.

Torque: 80 N·m (810 kgf·cm, 59 ft·lbf)

5.

DISCONNECT VACUUM HOSE FROM BRAKE
BOOSTER

Using pliers, slide the clip and disconnect the vacuum hose
from the brake booster and remove the clip.
6.

LHD:
DISCONNECT 2 BRAKE LINES FROM CLAMP

7.

REMOVE RETURN SPRING

8.

REMOVE CLIP AND CLEVIS PIN

9.

REMOVE BRAKE BOOSTER, GASKET AND CLEVIS

(a)

Remove the 4 nuts and clevis.

(b)

Pull out the brake booster and gasket.

BR1KN–01

F13377

SST

Gasket

F05422

SST

F05421

SST

–

BRAKE

BRAKE BOOSTER ASSEMBLY

BR–27

LEXUS RX300   (RM785E)

INSTALLATION

1.

INSTALL BRAKE BOOSTER

(a)

Install the booster and a new gasket.

(b)

Install the clevis to the operating rod.

(c)

Install and torque the booster installation nuts.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)

(d)

Install the clevis pin into the clevis and brake pedal, and
install the clip to the clevis pin.

(e)

Install the pedal return spring.

2.

LHD and Europe RHD:
ADJUST LENGTH OF BOOSTER PUSH ROD

NOTICE:
When adjusting the length of the booster push rod, install
a new gasket to the master cylinder. When installing the
master cylinder, remove the gasket before installing the
master cylinder.

(a)

Install a new gasket on the master cylinder.
Parts No.: 
Gasket: 47275–12020

(b)

Set the SST on the gasket, and lower the pin until its tip
slightly touches the piston.
SST

09737–00011

(c)

Turn the SST upside down, and set it on the booster.
SST

09737–00011

(d)

Measure the clearance between the booster push rod
and pin head (SST).
Clearance: 0 mm (0 in.)

HINT:
When adjusting the push rod, depress the brake pedal enough
so that the push rod sticks out.

(e)

Using SST, adjust the booster push rod length until the
push rod lightly touches the pin head.
SST

09737–00020