How to Adjust Your Mechanical Disc Brakes

Learn to adjust your mechanical disc brakes to ensure proper function and a quiet ride.

Tools Needed:

  • 5mm hex wrench or Allen key

Procedure:

  1. Adjust Cable Tension:

    • Locate where the cable attaches to the caliper arm.
    • Loosen the bolt and pull the cable tight with your fingers.
    • Secure the bolt, ensuring the cable is tight but not overly so.
  2. Center the Caliper:

    • Loosen the caliper bolts on the fork or frame slightly.
    • Apply gentle pressure to the caliper, allowing the outside pad to contact the rotor.
    • Lightly tighten the caliper bolts.
    • Spin the wheel and listen for any rubbing.
    • Lock the caliper in place by squeezing the brake lever and tightening the caliper bolts up fairly tight, but not tight enough to cause damage. 
  1. Adjust Inside Pad Position:

    • Use a 5mm wrench through the spokes to access the inside pad adjustment.
    • Tighten the adjustment until the pad contacts the rotor.
    • Back off slightly to create a small gap between the pad and rotor.
    • Spin the wheel and check for rubbing. If there is rub, back the inside pad adjustment off one click at a time and spin to check for rubbing again. 
  2. Fine-Tune Lever Feel:

    • Adjust personal preferences for brake lever throw using barrel adjusters.
    • Turn counterclockwise to increase tension, clockwise to decrease.
    • Lock in the adjustment by turning the inner ring.
  3. On-the-Trail Adjustments:

    • Barrel adjusters are handy for real-time tension adjustments during rides.

Make sure to test the brakes after adjustments and check regularly for optimal performance. Adjustments can be tailored to personal preferences, ensuring a comfortable and efficient braking experience.