Hydraulic Brake Booster: Installation: Installation

INSTALL BRAKE BOOSTER GASKET
1. Install a new brake booster gasket to the hydraulic brake booster.
INSTALL HYDRAULIC BRAKE BOOSTER ASSEMBLY
1. Install the hydraulic brake booster assembly with the 4 nuts.
  Torque: 14 N*m (145 kgf*cm, 10 ft.*lbf)
2. Connect the clamp to the body with the bolt.
  Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
3. Connect the brake tube to the clamp.
  NOTE:
  - If excessive force is used when connecting the brake tube to the clamp, the clamp may brake.
  - If the clamp breaks, do not reuse it. Replace the clamp with a new one.
4. Connect the 3 brake tubes to the clamp.
5. Connect the 4 brake lines to the correct positions of the hydraulic brake booster assembly as shown in the illustration.
  
  Fig 1: Identifying Wheel Cylinder Lines & Connectors (Front & Rear)
  Courtesy 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
6. Using a union nut wrench, connect the 4 brake lines to the hydraulic brake booster assembly.
  Torque: 15 N*m (155 kgf*cm, 11 ft.*lbf)
  
  NOTE:
  Use the formula to calculate special torque values for situations where a union nut wrench is combined with a torque wrench. Refer to PRECAUTION .
7. Install the wiring harness bracket with the bolt.
  Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)
  
  HINT:
  
  Insert the end of the bracket into the hole when installing the bracket.
8. Attach the VSC connector to the wiring harness bracket.
9. Attach the clamp.
10. Connect the 3 connectors to the hydraulic brake booster assembly.
  
  Fig 2: Identifying Connectors & Hydraulic Brake Booster Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSTALL AIR INJECTION CONTROL DRIVER WITH BRACKET . Refer to INSTALLATION - Step 2
INSTALL PUSH ROD PIN See step 2
INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY
1. Install the lower No. 1 instrument panel airbag assembly. Refer to INSTALLATION .
INSTALL ENGINE ROOM SIDE COVER LH
1. Install the engine room side cover LH with the 4 clips.
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 .
BLEED BRAKE SYSTEM See step 2
CHECK AND ADJUST BRAKE PEDAL
1. Check and adjust brake pedal. Refer to ADJUSTMENT .
INSPECT BRAKE MASTER CYLINDER OPERATION
1. Inspect the brake master cylinder operation. Refer to ON-VEHICLE INSPECTION .
PERFORM YAW RATE AND ACCELERATION SENSOR ZERO POINT CALIBRATION
1. Perform yaw rate and acceleration sensor zero point calibration. Refer to INSTALLATION - Step 4 .