Operation CHARM: Car repair manuals for everyone.

Manual Bleeding

1. Clean all dirt from the brake master cylinder filler cap area.
2. If the brake master cylinder is known or suspected of having air in the bore, it must be bled before any of the brakes are bled. To bleed the brake master cylinder, follow the procedures in this section.
3. To bleed the brake lines proceed as follows:

CAUTION: The brake master cylinder must be at least three-quarters full during air bleeding.

a. Begin at the rear bleeder screws.
b. Attach a rubber hose to the bleeder screw. The end of the hose should fit snugly around the end of the bleeder screw.
c. Submerge the free end of the hose in a container partially filled with clean brake fluid.
d. Have an assistant pump the brake pedal 5-10 times and maintain pressure on the brake pedal after the last stroke.
e. Loosen the bleeder screw approximately 3/4 turn. It is very important that the assistant maintain constant pressure on the brake pedal until the brake pedal drops all the way down and the bleeder screw is closed again. If brake pedal pressure is released, air will be drawn back into the system.

CAUTION: Brake fluid is harmful to painted and plastic surfaces. If brake fluid is spilled onto a painted or plastic surface, immediately wash it with water.

f. Tighten the bleeder screw to 6-8 Nm (53-77 inch lbs.).
g. Repeat this operation until the fluid is clear and air bubbles no longer appear at the submerged end of the rubber hose.
h. Repeat these steps at the other rear brake and then the front brakes.

NOTE: Never reuse brake fluid.