Introduction

Caliper brakes are one piece bicycle brakes that stop bicycle motion by pinching the rim with brake pads. Their main mechanism is governed by a wire that is attached to the brake levers. By using this guide to properly adjust your brakes, you can maximize brake performance.

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  • Using the 5mm allen wrench,check if the bolt on the backside of the caliper is snug.

These do not look like Ultegra 6800 brakes. 6800 brakes are symmetrical dual-pivot. These seem to be Ultegra 6700 - please correct me if I'm wrong.

Tony San Nicolas - Reply

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  • If your brake caliper is still tightened, loosen the cable bolt with a 5mm Allen wrench to take tension off the caliper.

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Image 1/3: Both pads are loosened the same way. Image 2/3: For the left caliper pad, marked in the red circle, loosen the bolt with a 4mm Allen wrench so the pad can be adjusted. Image 3/3: Align the bottom edge of the pad with the bottom edge of the braking surface and then tighten.
  • Check if the braking pads are contacting the rim in desired locations.

  • Both pads are loosened the same way.

    • For the left caliper pad, marked in the red circle, loosen the bolt with a 4mm Allen wrench so the pad can be adjusted.

      • Align the bottom edge of the pad with the bottom edge of the braking surface and then tighten.

    • For the right caliper pad, marked in the yellow circle, loosen the bolt with a 4mm Allen wrench so the pad can be adjusted.

      • Align the top edge of the pad with the top edge of the braking surface and then tighten.

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  • Check if your brake cable is inside the groove on the two plates (marked in the red cirlce) that hold the brake cable.

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Image 1/2: Image 2/2:
  • If the adjustment lever is not turned down, turn it down.

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Image 1/2: While still squeezing, pull down the slack on the wire and tension the wire by bolting it down. Image 2/2: While still squeezing, pull down the slack on the wire and tension the wire by bolting it down.
  • Squeeze the caliper until both sides are about 1mm from the rim.

  • While still squeezing, pull down the slack on the wire and tension the wire by bolting it down.

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Image 1/1: Counter clockwise turns open the calipers and clockwise turns close the calipers.
  • Fine tune the brake calipers by using the barrel adjuster.

  • Counter clockwise turns open the calipers and clockwise turns close the calipers.

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  • Make the brake pads equidistant from the rim by adjusting the tiny bolt on top of the caliper with a 3mm Allen wrench.

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  • Check if the brakes are working properly by squeezing your brake levers.

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Conclusion

Check if your brakes are properly working before you ride. If the tightness and alignment are satisfactory, enjoy your ride.

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Leland Lam

Member since: 02/24/2015

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Cal Poly, Team 24-4, Green Winter 2015 Member of Cal Poly, Team 24-4, Green Winter 2015

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