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Home >> Cadillac >> 1996 >> Seville SLS >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Bleeding Brake System >> Manual Bleeding Procedure
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Manual Bleeding Procedure

  1. Deplete vacuum reserve from power brake booster by depressing brake pedal several times with engine off. Fill master cylinder and keep at least half full during bleeding procedure. If master cylinder is not suspected of having air in bore, go to step 4). If master cylinder is known or suspected of having air in bore, go to next step.
  2. Disconnect forward brakeline fitting at master cylinder. Allow fluid to flow from fitting. Tighten fitting to specification. See TORQUE SPECIFICATIONS . Have an assistant depress brake pedal slowly and hold. Loosen forward fitting. Tighten fitting while pedal is still at floor. Release brake pedal slowly. Wait 15 seconds.
    NOTE: Rapid pumping of brake pedal causes master cylinder secondary piston to move into a position that makes bleeding system difficult.
  3. Repeat step 2), including 15 second wait, until fluid is clear and free of air bubbles. Repeat procedure at other (rearmost) brakeline fitting on master cylinder. Master cylinder is now bled. If calipers are not suspected to have air in them, it is not necessary to bleed them.
  4. If calipers are known or suspected to have air in them, raise and support vehicle. Remove bleeder valve cap from left front wheel, place proper size box end wrench over bleeder valve. Attach one end of clear tube over valve and submerge other end in container partially filled with clean brake fluid.
  5. Have an assistant depress brake pedal slowly and hold. Loosen bleeder valve to purge air from cylinder. Tighten bleeder valve and slowly release brake pedal. Wait 15 seconds. Repeat sequence, including 15 second wait, until all air is removed.
  6. Remove tube and wrench. Proceed to right front, left rear and right rear wheels in this order. Fill master cylinder reservoir, and install cover. Ensure there is no sponginess in brake pedal and that BRAKE warning light is off.