Volvo Truck 2003-05

Bleeding the ABS System


Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with the eyes and wash your hands thoroughly after handling brake fluid. If you do get brake fluid in your eyes, flush your eyes with clean, running water for 15 minutes. If eye irritation persists, or if you have taken brake fluid internally, IMMEDIATELY seek medical assistance.

Clean, high quality brake fluid is essential to the safe and proper operation of the brake system. You should always buy the highest quality brake fluid that is available. If the brake fluid becomes contaminated, drain and flush the system, then refill the master cylinder with new fluid. Never reuse any brake fluid. Any brake fluid that is removed from the system should be discarded. Also, do not allow any brake fluid to come in contact with a painted surface; it will damage the paint.

  1. Remove the reservoir cap and fill the brake reservoir with brake fluid.
  3. Pump the brake pedal several times, and then loosen the bleeder screw until fluid starts to run out without bubbles. Then close the bleeder screw.
  5. Repeat until there are no more bubbles in the fluid escaping.
  7. Tighten the bleeder screw to 80 inch lbs. (9 Nm).
  9. Check if there is still air in the system by pressing down the brake pedal with a jack at a pressure equivalent to heavy braking, 148 ft. lbs. (200 Nm).
  11. With the engine off and the brake pedal depressed 3-4 times, the pedal travel must not exceed 1 1 / 2 inch (40mm).
  13. If the pedal travel exceeds this limit, bleed again and re-check the pedal travel.
  15. Check that there is no brake fluid leakage.
  17. Fill the brake reservoir with the proper amount of brake fluid.

    Click image to see an enlarged view

    Fig. Bleeding the ABS brake system

    Bleeding the ABS brake system