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How do you bleed disc brake of motorcycle? |
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Similar to a car. Clean off the master cylinder cover and the caliper bleed screw. You will need a small jar, a length of narrow bore plastic/ribber tubing that fits tightly on the nipple of the bleed screw, a container of new, appropriate, brake fliud. Place the jar on firm ground by the wheel cylinder to be bled. Put one end of the tube on the bleed screw nipple and the other end in the jar. Put a small amount of brake fluid in the jar to cover the end of the tubing. Place cloths over paintwork (brake fluid strips paint) and remove the master cylinder lid. Using a properly fitting spanner, loosen the bleed screw anticlockwise a full turn. Keeping the fluid in the master cylinder topped up at all times, operate the brake lever to the full length of its travel. Hold the lever position and close the bleed screw. Release the lever. Repeat several times until no further bubbles issue from the tubing. Ensure bleed screw is tight, remove the tubing and refit the bleed screw cover (if fitted), check for correct fluid level check for no sponginess in the brake lever operation and replace the master cylinder cover. Immediately clean up any spillage with soapy water. Dispose of used fluid in accordance with local regulations. NOTE: If changing the fluid completely, proceed as above but leave the bleed screw open and operate the brake lever several times until the master cylinder is empty. Replace the fluid abd bleed the system as above until there are no further bubbles and the fluid runs clear. NOTE: An 'eeze-bleed' or similar one man device is used, it is not necessary to close and open the bleed screw. TIP: If you can't get rid of the air, remove the bleed screw and put grease on the threads. Replace the bleed screw and carry on.
First answer by Compendium. Last edit by Compendium. Contributor trust: 144 [recommend contributor]. Question popularity: 2 [recommend question]
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