Lexus SC300 / Lexus SC400. Manual - part 255

2. 

APPLY HIGH TEMPERATURE GREASE TO ADJUSTER

3. CONNECT 

PARKING 

BRAKE 

CABLE 

TO 

PARKING

BRAKE LEVER

(a)  Install the shoe hold–down springs, cups and pins.
(b)  Connect the parking brake cable to the parking brake shoe

lever of the rear shoe.

4. 

INSTALL REAR SHOE
Slide in the rear shoe between the shoe hold–down spring
cup and the backing plate.

NOTICE: Do not allow oil or grease to get on the rubbing face.

5. INSTALL 

TENSION 

SPRING, 

FRONT 

SHOE 

AND

ADJUSTER

(a)  Install the tension spring on the rear shoe.
(b)  Install the front shoe on the tension spring.
(c)  Install the adjuster between the front and rear shoes.

(d)  Slide in the front shoe between the shoe hold–down spring

cup and the backing plate.

BR–48

–

BRAKE SYSTEM

REAR BRAKE (Parking Brake)

6. 

INSTALL SHOE STRUT WITH SPRING
Install the strut with the spring forward.

7. 

INSTALL SHOE RETURN SPRINGS
Using needle–nose pliers, install the front shoe return spring
and then install the rear shoe return spring.

8. INSTALL 

DISC

(a)  Before installing, polish the disc and shoe surfaces with

sandpaper.

(b)  Align the matchmarks and install the disc.

HINT: If there are no matchmarks, temporarily install the disc,
then measure the disc runout and install the disc in the posi-
tion.
(See page 

BR–41

)

9. 

ADJUST PARKING BRAKE SHOE CLEARANCE

(a)  Temporarily install the hub nuts.
(b)  Remove the hole plug.
(c)  Turn the adjuster and expand the shoes until the disc locks.
(d)  Return the adjuster 8 notches.
(e)  Install the hole plug.

10.  INSTALL REAR DISC BRAKE ASSEMBLY

Install the disc brake assembly and torque the 2 mounting
bolts.

Torque: 104 N

⋅

m (1,065 kgf

⋅

cm, 77 ft

⋅

lbf)

11.  INSTALL REAR WHEEL

–

BRAKE SYSTEM

REAR BRAKE (Parking Brake)

BR–49

12.  SETTLING PARKING BRAKE SHOES AND DISC
(a)  Drive the vehicle at about 50 km/h (31 mph) on a safe, level

and dry road.

(b)  With the parking brake release button pushed in, pull on the

lever with 88 N (9 kgf, 19.8 lbf) of force.

(c)  Drive the vehicle for about 400 meters (0.25 mile) in this

condition.

(d)  Repeat this procedure 2 or 3 times.
13. CHECK 

AND ADJUST PARKING BRAKE LEVER TRAVEL

BR–50

–

BRAKE SYSTEM

REAR BRAKE (Parking Brake)

PROPORTIONING AND BY–PASS
VALVE (P & B VALVE)

FLUID PRESSURE INSPECTION

BR0ET–01

1. 

INSTALL LSPV GAUGE (SST) AND BLEED AIR
SST 09709–29017

2.  RAISE MASTER CYLINDER PRESSURE AND CHECK

REAR WHEEL CYLINDER PRESSURE

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Master cylinder pressure

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Rear wheel cylinder pressure

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1,961 kPa

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1,961 kPa

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(20 kgf/cm

2

, 284 psi)

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(20 kgf/cm

2

, 284 psi)

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7,845 kPa

5,492 kPa

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(80 kgf/cm

2

, 1,138 psi)

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(56 kgf/cm

2

, 796 psi)

Specifications: If the rear wheel cylinder pressure is in-
correct, replace the master cylinder.

3. 

BLEED BRAKE SYSTEM

4. 

CHECK FOR FLUID LEAKAGE

–

BRAKE SYSTEM

PROPORTIONING AND BY–PASS VALVE (P & B
VALVE)

BR–51