How to Tighten a Threaded Headset

Threaded headsets use a stack of rings and bearing-cartridges to seal the steering tube in a bicycle's head-tube. If the headset loosens, steering suffers, becoming sloppy and sluggish. Regain your bicycle's steering by tightening the threaded headset cap. This is quickly done at home, on the side of the road or on the trail. While you are tightening the headset, take the time to inspect the inside of the headset to ensure no excess grit is on the column.

Things You'll Need

  • 4 millimeter or 5 millimeter hex wrench
  • Adjustable wrench or headset wrench
  • Bicycle grease
  • Rag
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Instructions

    • 1

      Unscrew the center hex screw on the cap of the headset. Most headsets use either a 4 millimeter or 5 millimeter hex wrench. Unscrew and remove the cap.

    • 2

      Inspect the stack of rings and bearings and check for excess grit, dried out bearings or anything that impedes the steering and movement of the headset and steering tube.

    • 3

      Wipe off the center screw and coat with fresh grease.

    • 4

      Screw the headset cap back onto the top of the stack. Turn until tight and resistance is met.

    • 5

      Slide the adjustable or headset wrench onto the large nut on the base of the headset, where it meets the head-tube and give one-half turn clockwise to tighten. Keep the hex wrench in the bolt as you adjust the nut, providing further tightening.

    • 6

      Push the handlebars left to right. If it is sticky and you meet resistance, it is too tight, turn one-quarter turn counterclockwise on the nut while keeping the hex wrench in the cap. Test the bars again to ensure they are smooth.