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Brake Actuator: Installation

NOTE: In case of replacing the skid control ECU, perform the zero point calibration of the steering angle sensor, master cylinder pressure sensor, and yaw rate and deceleration sensor (See CALIBRATION  ).
Fig 1: Identifying Brake Actuator Bracket Assembly
G05159839Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. INSTALL VSC ACTUATOR WITH ACTUATOR BRACKET ASSEMBLY 
    1. Install the VSC actuator with actuator bracket with the 3 nuts.
      NOTE: Do not drop the actuator. If dropped, replace it.
    2. Tighten the 3 nuts uniformly in alphabetical order.

      Torque: 22 N*m (224 kgf*cm, 16 ft.*lbf) 

      NOTE: Do not damage the brake lines or wire harness.
      Fig 2: Locating VSC Actuator, Actuator Bracket With Nuts
      G05159841Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CONNECT BRAKE TUBE 
    1. Set each brake line to the correct position on the brake actuator as shown in the illustration.
    2. Install the clamp onto the VSC actuator bracket.
      Fig 3: Identifying Brake Tube
      G05159834Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a union nut wrench, connect the 4 brake tubes.
      • Without union nut wrench

      Torque: 15 N*m (155 kgf*cm, 11 ft.*lbf) 

      • With union nut wrench

      Torque: 14 N*m (144 kgf*cm, 10 ft.*lbf) 

      NOTE:
      • This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.8 in.) and a union nut wrench with a fulcrum length of 22 mm (0.866 in.) (See PRECAUTION ).
      • This torque value is effective when union nut wrench is parallel to the torque wrench.
        Fig 4: Identifying Fulcrum Length
        G05649603Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSTALL BRAKE TUBE 
    1. Using a union nut wrench, connect the 2 brake tubes to the brake master cylinder.
      • Without union nut wrench

      Torque: 20 N*m (199 kgf*cm, 14 ft.*lbf) 

      • With union nut wrench

      Torque: 18 N*m (185 kgf*cm, 13 ft.*lbf) 

      NOTE:
      • This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.8 in.) and a union nut wrench with a fulcrum length of 22 mm (0.866 in.) (See PRECAUTION ).
      • This torque value is effective when union nut wrench is parallel to the torque wrench.
        Fig 5: Identifying Fulcrum Length
        G05649604Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a union nut wrench, connect the 2 brake tubes to the VSC actuator.
      • Without union nut wrench

      Torque: 20 N*m (199 kgf*cm, 14 ft.*lbf) 

      • With union nut wrench

      Torque: 18 N*m (185 kgf*cm, 13 ft.*lbf) 

      NOTE:
      • This torque value can be obtained by using a torque wrench with a fulcrum length of 300 mm (11.8 in.) and a union nut wrench with a fulcrum length of 22 mm (0.866 in.) (See PRECAUTION ).
      • This torque value is effective when union nut wrench is parallel to the torque wrench.
        Fig 6: Identifying Fulcrum Length
        G05649605Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. CONNECT VSC ACTUATOR CONNECTOR 
    1. Connect the VSC actuator connector.
  5. FILL RESERVOIR WITH BRAKE FLUID  (See REPLACEMENT )
  6. BLEED AIR FROM BRAKE MASTER CYLINDER  (See REPLACEMENT )
  7. BLEED AIR FROM BRAKE LINE  (See REPLACEMENT )
  8. BLEED AIR FROM VSC ACTUATOR ASSEMBLY  (See REPLACEMENT )
    Fig 7: Connecting VSC Actuator Connector
    G05159846Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. CHECK BRAKE FLUID LEVEL IN RESERVOIR  (See REPLACEMENT )
  10. INSPECT FOR BRAKE FLUID LEAK 
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