To change brake fluid, bleed the lines, and then refill the reservoir with fresh fluid. You need a flexible tube, a clear container, a wrench and someone to step on the brake pedal. Consult the repair manual for your vehicle to ensure the lines are safe to bleed.
- Fill the brake fluid reservoir
Fill the reservoir, and replace the cap.
- Prepare a clear container
Fill 1 inch of a clear container with brake fluid. Place one end of a flexible tube inside of the container.
- Locate the bleed valve behind the back wheels
Search for the bleed valve bolt behind the brake cylinder.
- Attach the opposite end of the tube to the valve
Remove the rubber cap attached to the bleed valve. Attach the other end of the tube to the valve.
- Loosen the valve
Use a wrench to loosen the valve slightly without releasing any fluid.
- Pump and hold the brake pedal
Press and release the brake pedal a few times. Hold the pedal down slightly.
- Loosen the valve more
With the brake pedal held down, loosen the valve more to allow fluid to flow through the tube.
- Push the brake pedal lower
Push the brake pedal down slowly. When the pedal is held down two-thirds of the way, tighten the valve. Release the pedal. Repeat the process until air bubbles stop exiting the tube.
- Bleed the remaining lines
Follow the same process to bleed the three remaining lines, and check the fluid level in the reservoir throughout.
- Fill the reservoir
Fill the reservoir to the full line.