Campagnolo bicycle brakes feature a dual-pivot design. During braking, the brake arms close simultaneously upon the rim portion of the bicycle wheel. Each brake arm includes a rubber pad, which grips the surface of the rim, causing the bicycle to slow. The brakes may need to be adjusted periodically to ensure optimal performance. Common adjustments include pad height, pad clearance and brake centring. Pad height and clearance ensure that each pad strikes the braking surface of the rim squarely. Centring the brake prevents one pad from striking the rim before the second pad.
Squeeze the brake lever and observe each brake pad in relation to its position against the side of the rim--the pads should be equal height and parallel against the braking surface of the rim. Release the brake lever.
Use a 5-mm Allen key to loosen the pad holder bolt, on the side of the pad. Adjust the height of the pad, as needed. Adjust both pads, if necessary.
Check the adjustment by squeezing the brake lever once. Each pad should now strike the brake surface of the rim evenly.
Squeeze the brake lever a third time. Observe the brake pads, closing in upon the rim. The pads should meet the rim simultaneously; if not, the brake needs to be centred.
Locate the 2-mm centring screw on the side of the brake. Use a 2-mm Allen key and turn the screw in the appropriate direction. Turning the screw clockwise moves the right brake pad closer to the rim; turning the screw counterclockwise moves the left brake pad closer to the rim.
Squeeze the brake lever again, and check that both pads now strike the sides of the rim simultaneously. Adjust further, if necessary.
Observe the distance of each pad from the side of the rim. Campagnolo.com recommends a distance of one millimetre. If the distance is more or less than one millimetre, adjustment is needed.
Locate the cable tension adjustment screw at the point where the cable first enters the body of the brake. The screw is turned by hand.
Turn the screw in the appropriate direction. Turning the screw away from the body of the brake moves the pads closer to the sides of the rim. Turning the screw away from the body moves the pads further away.
- Stockbyte/Stockbyte/Getty Images