Power Brake Unit: Installation

1996 Lexus SC 400SECTION Installation

Ensure power brake unit push rod length is correct. See POWER BRAKE UNIT PUSH ROD  under ADJUSTMENTS. Bench bleed master cylinder. Install master cylinder with NEW gasket. To complete installation, reverse removal procedure. Bleed brake and TRAC system. See BLEEDING BRAKE SYSTEM . Ensure brake pedal height is correct. Refer to BRAKE PEDAL HEIGHT & FREE PLAY  under ADJUSTMENTS. Retest power brake unit. See POWER BRAKE UNIT TEST .



Ensure power brake unit push rod length is correct. See POWER BRAKE UNIT PUSH ROD  under ADJUSTMENTS. Bench bleed master cylinder. Install master cylinder with NEW gasket. To complete installation, reverse removal procedure. Bleed brake system. See BLEEDING BRAKE SYSTEM . Ensure brake pedal height is correct. Refer to BRAKE PEDAL HEIGHT & FREE PLAY  under ADJUSTMENTS. Retest power brake unit. See POWER BRAKE UNIT TEST .

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.