BRAKE FLUID AIR BLEEDING

id041100700300

Oil and Chemical Type

Caution

•  Brake fluid will damage painted surfaces. Be careful not to spill any on painted surfaces. In addition, if there is any brake fluid on the wiring harness, the wire insulation may corrode causing a malfunction such as a short circuit. If brake fluid gets on a painted surface or wiring harness, wash and flush it off completely with water immediately.

•  Do not empty the brake fluid in the following brake related parts. Otherwise, the electronically controlled brake unit could be damaged.

―  Electronically controlled brake unit

―  Brake fluid reserve tank

―  Rear brake caliper

Note

•  Keep the fluid level in the brake fluid reserve tank at 3/4 full or more during the air bleeding.

•  Bleed the air from the brake caliper that is the nearest to the electronically controlled brake unit.

•  Bleed the air inside the brake fluid reserve tank when the fluid inside the brake fluid reserve tank is empty. (See ELECTRONICALLY CONTROLLED BRAKE UNIT REMOVAL/INSTALLATION [L.H.D.].)(See ELECTRONICALLY CONTROLLED BRAKE UNIT REMOVAL/INSTALLATION [R.H.D.].)

1.  Disconnect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

2.  Remove the wheel and tire. (See WHEEL AND TIRE REMOVAL/INSTALLATION.)

3.  Remove the cap from the brake fluid reserved tank and add brake fluid.

4.  Perform air bleeding in the following order. (See Brake Fluid Air Bleeding Note.)

(1)  Front part on driver’s side

(2)  Front part on passenger's side

(3)  Rear part on driver's side

(4)  Rear part on passenger's side

5.  Connect the negative lead-acid battery terminal. (See NEGATIVE LEAD-ACID BATTERY TERMINAL DISCONNECTION/CONNECTION.)

6.  After air bleeding, inspect the following:

•  Brake operation

•  Fluid leakage

•  Fluid level

Brake Fluid Air Bleeding Note

1.  Remove the bleeder cap on the brake caliper, and attach a vinyl tube to the bleeder screw.

2.  Place the other end of the vinyl tube in a clear container and fill the container with fluid during air bleeding.

Note

•  Air bleeding from the brake pipe can be implemented quickly by slowly depressing the brake pedal.

3.  Working with two people, one should pump the brake pedal strongly and quickly several times, and then depress and hold the pedal down.

ac4ccw00001649

4.  While one technician depresses the brake pedal and another technician loosens the bleeder screw using a box-end wrench, drain any fluid containing air bubbles, and then retighten the bleeder screw.

a30zzw00005738

5.  Repeat Steps 3 and 4 until no air bubbles are seen.

6.  Perform air bleeding as described in the above procedures for all brake calipers.