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ADJUSTING THE AMOUNT OF DOT FLUID IN THE BRAKE It is possible for your brake to have too much DOT fluid in it. As a result the brakes may experience very short deadband, or in extreme cases the pistons will not retract far enough, causing the brake pads to drag on the rotor. Here's how to take care of the problem:
1. If your brake has Pad Contact-Point Adjustment, rotate the adjuster to the full "out" position. Now it's in the most open position (short deadband).
2. Remove wheel from the bicycle.
3. Using T10 TorxTM wrench (included in the Avid Bleed Kit) remove the lever body bleed screw.
4. Carefully insert the red plastic pad spacer between the brake pads to press the pads and caliper pistons apart.
5. A small amount of DOT fluid will flow from the lever body bleed port. While still applying light pressure on the pads, insert the bleed screw back into the lever body and tighten.
6. Spray lever body with soapy water and wipe clean with a rag.
7. Install the wheel back onto the bicycle and firmly squeeze the lever approximately 10 times to reset the pads; check for any leaks around the bleed port. Now there should be more deadband and less pressure in the system. If there is still excessive pressure after completing this procedure, perform a complete bleed of the system.