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Home >> Lexus >> 2019 >> GS 300 Base >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control System - Service Information >> Brake Actuator >> Installation [09/2014 - 10/2015] >> Procedure

Installation [09/2014 - 10/2015]: Procedure

  1. INSTALL NO. 5 BRAKE ACTUATOR BRACKET 
    1. Install the No. 5 brake actuator bracket with the bolt.

      Torque: 11 N*m (112 kgf*cm, 8 ft.*lbf) 

  2. INSTALL BRAKE ACTUATOR WITH BRACKET 
    1. Install the brake actuator with bracket with the 2 bolts and nut. Tighten the 2 bolts and nut uniformly in alphabetical order.
      GTY661114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

      NOTE:
      • Do not damage the brake lines or wire harness.
      • Do not hold the actuator by the connector.
      • If the actuator is dropped, replace it.
    2. Temporarily tighten each brake line to the correct positions of the actuator assembly with bracket as shown in the illustration.
      GTY629925Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      • *1: to front wheel cylinder RH
      • *2: to front wheel cylinder LH
      • *3: to rear wheel cylinder RH
      • *4: to rear wheel cylinder LH
      • *5: from front master cylinder
      • *6: from rear master cylinder
    3. Using a union nut wrench, tighten each brake line.
      GTY417038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Specified tightening torque 

      Torque: 15.2 N*m (155 kgf*cm, 11 ft.*lbf) 

      HINT: 

      GTY512932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Torque Wrench Fulcrum Length
      • Calculate the torque wrench reading when changing the fulcrum length of the torque wrench (Refer to PRECAUTION [09/2014 - 10/2015] ).
      • When using a union nut wrench (fulcrum length of 22 mm (0.8661 in.)) + torque wrench (fulcrum length of 162 mm (6.3779 in.)): 13 N*m (137 kgf*cm, 10 ft.*lbf)
    4. Connect the brake actuator connector.
      NOTE:
      • Make sure that the connector is locked securely.
      • Make sure that the actuator connector can be connected smoothly. Do not allow water, oil or dirt to enter.
  3. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Refer to INITIALIZATION [09/2014 - 10/2015] ).

  4. BLEED BRAKE SYSTEM 

    Refer to PROCEDURE - Step 2

  5. INSTALL ENGINE ROOM SIDE COVER LH 

    Refer to PROCEDURE - Step 2

  6. INSTALL FRONT WHEEL 

    Torque: 103 N*m (1050 kgf*cm, 76 ft.*lbf) 

  7. INSPECT BRAKE ACTUATOR WITH TECHSTREAM 

    (Refer to ON-VEHICLE INSPECTION [09/2014 - 10/2015] )

  8. PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION 

    (Refer to CALIBRATION [09/2014 - 10/2015] )