Repair guides › Cockpit
Adjust a threaded headset
Older/budget headset where the top bearing race threads onto the steerer and a locknut holds it. The adjustable cup is threaded down to set preload, then the locknut is tightened against it. The quill stem wedges inside the steerer.
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Tools
- 12" adjustable wrench: Crescent 12 inch adjustable wrench ($)
- Headset wrench 32/36 mm: Park Tool HCW-15 ($$)
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Steps
- Hold the adjustable cup with one wrench and loosen the locknut about half a turn with the other.
- Turn the adjustable cup clockwise in 1/8-turn steps until the play just disappears (as loose as possible with no knock).
- Hold the cup still and tighten the locknut against it (about 20 Nm).
- Re-check: no play, and the bars turn with no tight spot. Repeat if needed.
Torque
| Fastener | Torque |
|---|---|
| Headset locknut | ~20 Nm |
Signs it needs doing
- Play when rocking with the front brake on
- Locknut loosening