2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Brake Actuator: Installation

  1. INSTALL BRAKE ACTUATOR BOLT CUSHION 
    1. Install the 2 brake actuator bolt cushions and 2 brake actuator bolt holders to the brake actuator.
      NOTE:
      • Do not hold the actuator by the connector.
      • Do not remove the hole plugs of a new brake actuator before connecting the 6 brake lines because the brake actuator is filled with brake fluid.
        Fig 1: Identifying Brake Actuator Bolt Holders And Brake Actuator Bolt Cushions
        G05752688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL BRAKE ACTUATOR 
    1. Install the brake actuator bolt cushion to the brake actuator bracket assembly.
    2. Install the brake actuator to the brake actuator bracket assembly with the 2 nuts

      Torque: 5.4 N*m (55 kgf*cm, 48 in.*lbf) 

  3. TEMPORARILY INSTALL BRAKE ACTUATOR WITH BRACKET 
    1. Temporarily install the brake actuator with bracket
      Fig 2: Identifying Brake Actuator Bolt Cushion And Brake Actuator Bracket Assembly
      G05752687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Install the No. 3 front brake tube and grommet.
  4. INSTALL BRAKE MASTER CYLINDER SUB-ASSEMBLY  (See INSTALLATION )
    Fig 3: Locating No. 3 Front Brake Tube And Grommet
    G05752686Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. INSTALL BRAKE ACTUATOR WITH BRACKET 
    1. Install the brake actuator with bracket to the body with the 2 bolts and nut

      Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf) 

      NOTE: Do not damage the brake lines or wire harness.
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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.

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