Lexus RX300 (MCU15). Service manual — part 166

BR1KJ–01

F13269

Paint Line

Paint Line

LHD:

RHD:

F13283

LHD:

RHD:

BR–16

–

BRAKE

BRAKE MASTER CYLINDER

LEXUS RX300 (RM785E)

REMOVAL

1.

LHD:
REMOVE AIR CLEANER ASSEMBLY

2.

TAKE OUT FLUID WITH SYRINGE

NOTICE:
Do not let brake fluid remain on a painted surface. Wash it
off immediately.
3.

DISCONNECT LEVEL WARNING SWITCH CONNEC-
TOR

4.

DISCONNECT BRAKE HOSE FROM RESERVOIR AS-
SEMBLY

Using pliers, slide the clip and disconnect the reservoir hose
from the reservoir, and remove the clip.
HINT:
At the time of installation, install the brake hose with a paint line
on the hose facing upward.

5.

REMOVE RESERVOIR ASSEMBLY WITH BRACKET
AND HOSES

(a)

LHD:
Remove the bolt and disconnect the reservoir assembly
from bracket.
Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf)

(b)

RHD:
Remove the 2 bolts and reservoir assembly with bracket.
Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf)

(c)

Using pliers, slide the 2 clips to the direction of the reser-
voir.

(d)

Disconnect the 2 reservoir hoses from the master cylinder
and remove the clips.

HINT:
At the time of installation, please refer to the following item.

S

LHD:
Connect the reservoir hose with a paint line on the hose
facing forward.

S

RHD:
Connect the reservoir hose with a paint line on the hose
facing downward.

(e)

RHD:
Remove the bolt and disconnect the reservoir assembly
from bracket.
Torque: 8.8 N·m (90 kgf·cm, 78 in.·lbf)

F13284

SST

F13285

–

BRAKE

BRAKE MASTER CYLINDER

BR–17

LEXUS RX300 (RM785E)

6.

REMOVE MASTER CYLINDER

(a)

Using SST, disconnect the 2 brake lines.
SST

09751–36011

Torque: 15 N·m (155 kgf·cm, 11 ft·lbf)

(b)

LHD:
Remove the 2 nuts, bracket, 2–way and pull out the mas-
ter cylinder.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)

(c)

Europe RHD:
Remove the 2 nuts, bracket and pull out the master cylin-
der.
Torque: 13 N·m (130 kgf·cm, 9 ft·lbf)

(d)

RHD except for Europe:
Remove the 2 nuts, bracket and pull out the master cylin-
der and gasket.

BR1KK–01

F13270

Paint Line

F13282

F13280

F09717

W03570

F13609

LHD and Europe RHD:

RHD except for Europe:

BR–18

–

BRAKE

BRAKE MASTER CYLINDER

LEXUS RX300 (RM785E)

DISASSEMBLY

1.

REMOVE RESERVOIR

(a)

Using pliers, slide the 2 clips and remove the reservoir
hoses and clips from the reservoir.

HINT:
At the time of reassembly, install the reservoir hose with a paint
line facing upward.
(b)

Remove the cap, strainer from the reservoir.

2.

PLACE MASTER CYLINDER IN VISE

3.

REMOVE INLET UNION

(a)

LHD and Europe RHD:
Using a pin punch (5 mm) and hammer, remove the pin
from the cylinder body.

(b)

RHD except for Europe:
Remove the set screw.

(c)

Pull out the inlet union.

4.

REMOVE 2 GROMMETS

5.

REMOVE 2 PISTONS AND SPRING

(a)

LHD and Europe RHD:
Push in the No. 1 piston by hand, remove the snap ring
with snap ring pliers.

(b)

Push in the piston with a screwdriver, and remove the
straight pin or 2 straght pins by turning over the cylinder
body.

HINT:
Tape the screwdriver tip before use.

R12236

A

–

BRAKE

BRAKE MASTER CYLINDER

BR–19

LEXUS RX300 (RM785E)

(c)

Remove the No. 1 piston and spring by hand, pulling
straight out, not at an angle.

NOTICE:
If pulled out and installed at an angle, there is a possibility
that the cylinder bore could be damaged.

(d)

Place a rag and 2 wooden blocks on the work table, and
lightly tap the cylinder flange against the block edges until
the No. 2 piston and spring drops out of the cylinder.

HINT:
Make sure that the distance (A) from the rag to the top of the
blocks is at least 100 mm (3.94 in.).
6.

LHD and Europe RHD:
REMOVE O–RING FROM CYLINDER BODY