Front Brake Installation

Brake. Lexus Gs430, Gs300. Uzs190 Grs190
Brake. Lexus Gs430, Gs300. Uzs190 Grs190

  1. INSTALL DISC BRAKE CYLINDER ASSEMBLY

  2. CONNECT FRONT FLEXIBLE HOSE

  3. INSTALL DISC BRAKE PAD KIT FRONT (PAD ONLY)

  4. INSTALL FRONT DISC BRAKE ANTI-RATTLE SPRING

  5. INSTALL FRONT DISC BRAKE WITH HOLE PIN

  6. DISABLE BRAKE CONTROL (w/ ECB)

  7. FILL RESERVOIR WITH BRAKE FLUID (w/ VSC)

  8. FILL RESERVOIR WITH BRAKE FLUID (w/ ECB)

  9. BLEED BRAKE LINE (w/ VSC)

  10. BLEED BRAKE FRONT BRAKE SYSTEM (w/ ECB)

  11. CHECK FLUID LEVEL IN RESERVOIR (w/ VSC)

  12. CHECK BRAKE FLUID LEVEL (w/ ECB)

  13. INSPECT BRAKE FLUID LEAKAGE

  14. INSTALL FRONT WHEEL

  15. CHECK AND CLEAR DTC (w/ ECB)

  16. CHECK AND CLEAR DTC (w/ VSC)

Front Brake -- Installation



1. INSTALL DISC BRAKE CYLINDER ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190.Brake.Brake System.Front Brake  Installation
  1. Install the caliper with the 2 bolts.

    Torque:
    78.4 N*m{800 kgf*cm, 58 ft.*lbf}


2. CONNECT FRONT FLEXIBLE HOSE


    Lexus Gs430, Gs300. Uzs190 Grs190.Brake.Brake System.Front Brake  Installation
  1. Connect the flexible hose with the union bolt and a new gasket.

    Torque:
    39 N*m{400 kgf*cm, 29 ft.*lbf}
    NOTICE:
    Install the flexible hose lock securely in the lock hole in the disc brake cylinder assembly.


3. INSTALL DISC BRAKE PAD KIT FRONT (PAD ONLY)
HINT:
Install the clip lock securely in the groove of the pad.


    Lexus Gs430, Gs300. Uzs190 Grs190.Brake.Brake System.Front Brake  Installation
  1. Apply disc brake grease to the anti-squeal shims and install them to each pad.

    NOTICE:
    1. Apply disc brake grease to the anti-squeal shims and install them to each pad.
    2. Install each shim in the correct position and direction.
    3. There should be no oil or grease on the friction surface of the pads and the disc.
    4. Install each pad, as shown in the illustration.


4. INSTALL FRONT DISC BRAKE ANTI-RATTLE SPRING


5. INSTALL FRONT DISC BRAKE WITH HOLE PIN


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Install the hole pin while pushing on the front disc brake anti-rattle spring.

  1. Install the clip.



6. DISABLE BRAKE CONTROL (w/ ECB)
  1. Move the shift lever to the P position and apply the parking brake.



    Lexus Gs430, Gs300. Uzs190 Grs190.Brake.Brake System.Front Brake  Installation
  1. Connect the intelligent tester to the DLC3 with the engine switch off.



  1. Remove the 2 ABS motor relays with the engine switch off from the engine room relay block No.3.


    Lexus Gs430, Gs300. Uzs190 Grs190.Brake.Brake System.Front Brake  Installation

  1. Turn the engine switch on (IG).

    NOTICE:
    Do not start the engine.
  1. Turn the intelligent tester on and select "DIAGNOSTIC MENU"→"ABS/VSC"→"ECB UTILITY"→"ECB INVALID".



7. FILL RESERVOIR WITH BRAKE FLUID (w/ VSC)


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Fill reservoir with brake fluid.

    Fluid:
    SAE J1703 or FMVSS No. 116 DOT3


8. FILL RESERVOIR WITH BRAKE FLUID (w/ ECB)
NOTICE:
If brake fluid leaks onto any painted surface, clean it off completely.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Add brake fluid into the reservoir.

    Fluid:
    SAE J1703 or FMVSS No.116 DOT3


9. BLEED BRAKE LINE (w/ VSC)
NOTICE:
Bleed the air from the wheel furthest from the master cylinder.
  1. Connect a vinyl tube to the bleeder plug.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.

  1. Repeat (b) and (c) until all the air in the fluid is completely bled out.

  1. Using SST, tighten the bleeder plug completely.

    SST
    09023-00101
    Torque:
    11 N*m{112 kgf*cm, 8 ft.*lbf}
  1. Repeat the above procedures for each wheel to bleed the air from the brake line.



10. BLEED BRAKE FRONT BRAKE SYSTEM (w/ ECB)
NOTICE:
Bleed the air from the wheel furthest from the master cylinder.


    Lexus Gs430, Gs300. Uzs190 Grs190
  1. Connect the vinyl tube to the bleeder plug.

  1. Depress the brake pedal several times, then loosen the bleeder plug with the pedal depressed.



    Lexus Gs430, Gs300. Uzs190 Grs190
  1. When fluid stops coming out, tighten the bleeder plug, then release the brake pedal.

  1. Repeat (b) and (c) until all the air in the fluid is completely bled out.

  1. Using SST, tighten the bleeder plug completely.

    Torque:
    11 N*m{112 kgf*cm, 8 ft.*lbf}
  1. Repeat the above procedures for other wheels to bleed the air from the brake line.



11. CHECK FLUID LEVEL IN RESERVOIR (w/ VSC)
  1. Check the fluid level and add fluid if necessary.

    Fluid:
    SAE J1703 or FMVSS No. 116 DOT3
    If fluid leaks, tighten or replace the leaking part.


12. CHECK BRAKE FLUID LEVEL (w/ ECB)
  1. After performing accumulator zero down (accumulator depressurizing), adjust the fluid level in the master cylinder reservoir to the MAX level.

    HINT:
    1. After performing accumulator zero down (accumulator depressurizing), fluid is built up in the accumulator by turning the engine switch on (IG) and the fluid level lowers.
    2. If the fluid level is adjusted without performing accumulator zero down (accumulator depressurizing), fluid is sent from the accumulator to the reservoir. The fluid level may exceed the MAX level, but it is normal.


13. INSPECT BRAKE FLUID LEAKAGE


14. INSTALL FRONT WHEEL
Torque:
103 N*m{1,050 kgf*cm, 76 ft.*lbf}


15. CHECK AND CLEAR DTC (w/ ECB)
(Click here)


16. CHECK AND CLEAR DTC (w/ VSC)
(Click here)