Brake Fluid: Bleeding: Bleeding

HINT: 

If any work is performed on the brake system or if air in the brake lines is suspected, bleed air from the brake system.

1. REMOVE CENTER COWL TOP VENTILATOR LOUVER  See step  1
2. BLEED BRAKE LINE 
   1. Remove the brake master cylinder reservoir filler cap assembly.
   2. Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brakes.

      Brake fluid

      SAE J1703 or FMVSS No. 116 DOT 3

   3. Remove the bleeder plug cap.
   4. Connect a vinyl tube to the bleeder plug.
   5. Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.*1
   6. When fluid stops coming out, tighten the bleeder plug, and then release the brake pedal.*2
   7. Repeat *1 and *2 until all the air in the fluid is completely bled out.
   8. Tighten the bleeder plug completely.

      for front brake 

      Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

      for rear brake 

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

   9. Install the bleeder plug cap.
   10. Repeat the above procedure for each wheel to bleed the brake line.
   11. Check for brake fluid leaks.
   12. Inspect the fluid level See step  1.
3. BLEED BRAKE SYSTEM 
   1. Bleed the brake master cylinder.
      NOTE:

      • If the master cylinder is reinstalled or if the reservoir becomes empty, bleed the master cylinder.
      • To prevent brake fluid from damaging painted surfaces, cover any surrounding parts with a piece of cloth.
      1. Remove the brake master cylinder reservoir filler cap assembly.
      2. Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brakes.

         Brake fluid

         SAE J1703 or FMVSS No. 116 DOT 3

      3. Using a union nut wrench, disconnect the 2 brake lines from the brake master cylinder sub-assembly.
         Fig 1: Identifying Brake Lines And Union Nuts

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Slowly depress the brake pedal and hold it.*1
         Fig 2: Depressing The Brake Pedal And Holding It

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Cover the 2 outer holes with your fingers and release the brake pedal.*2
         Fig 3: Covering 2 Outer Holes Of Master Cylinder

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Repeat *1 and *2 3 or 4 times.
      7. Using a union nut wrench, connect the 2 brake lines to the master cylinder.
         Fig 4: Identifying Brake Lines And Union Nuts

         Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

         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 .

   2. Bleed the brake line.
      NOTE:

      • Bleed the brake line of the wheel farthest from the master cylinder first.
      • Add brake fluid to keep the level between the MIN and MAX lines of the reservoir while bleeding the brakes.
      1. Remove the bleeder plug cap.
      2. Connect a vinyl tube to the bleeder plug.
      3. Depress the brake pedal several times, and then loosen the bleeder plug with the pedal depressed.*1
      4. When fluid stops coming out, tighten the bleeder plug, and then release the brake pedal.*2
      5. Repeat *1 and *2 until all the air in the fluid is completely bled out.
      6. Tighten the bleeder plug completely.

         for front brake 

         Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

         for rear brake 

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

      7. Install the bleeder plug cap.
      8. Repeat the above procedure for each wheel to bleed the brake line.
   3. Bleed the brake actuator.
      NOTE:

      After bleeding the air from the brake system, if the correct height or feel of the brake pedal cannot be obtained, bleed the air from the brake actuator assembly with the Techstream by following the procedures below.

      1. Depress the brake pedal more than 20 times with the ignition switch off.
      2. Connect the Techstream to the DLC3 and turn the ignition switch to ON.
         NOTE:

         Do not start the engine.

      3. Turn the Techstream on and enter the following menus: Chassis / ABS/VSC/TRAC / Utility / Air Bleeding.
      4. Bleed the brake actuator by following the instructions on the Techstream.
      5. After bleeding air, tighten each bleeder plug.

         for front brake 

         Torque: 8.3 N*m (85 kgf*cm, 73 in.*lbf) 

         for rear brake 

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

      6. Turn the Techstream off and disconnect the Techstream from the DLC3.
      7. Turn the ignition switch off.
   4. Check for brake fluid leaks.
   5. Check the brake fluid level in the reservoir See step  1.
4. INSTALL CENTER COWL TOP VENTILATOR LOUVER  See step  3