How to Overhaul a Threadless Headset

A properly working headset is important for not only a smooth ride, but also your safety. In this video, Calvin walks through the steps for overhauling a threadless headset, including troubleshooting, cleaning components, inspecting bearings, and how to properly reassemble a headset.

Other repair help videos about Bicycle Headsets will be releasing soon, !

Questions or comments? Leave them below!

Video Contents:
00:00 Intro
00:20 Types of Threadless Headsets
01:06 Procedure
04:00 Cleaning
04:39 Inspection: Cup & Cone
05:28 Inspection: Cartridge Bearing
06:29 Assembly: Cartridge Bearing
08:12 Assembly: Caged Ball Bearings
10:17 Assembly: Loose Ball Bearings
13:38 Internally Routed Cables & Housing
14:16 Adjustment Overview

Find a text-based version of this procedure here: parktool.com/en-us/blog/repair-help/threadless-headset-service

➤ Tools & materials used:
• THH-1 Sliding T-Handle Hex Wrench Set: parktool.com/en-us/product/sliding-t-handle-hex-wrench-set-thh-1
• HXS-3 Stubby Hex Wrench Set: parktool.com/en-us/product/stubby-hex-wrench-set-hxs-3
• ATD-1.2 Adjustable Torque Driver: parktool.com/en-us/product/adjustable-torque-driver-atd-1-2
• AWS-1 3-Way Hex Wrench: parktool.com/en-us/product/3-way-hex-wrench-aws-1
• SBC-1 Spoke, Bearing, and Cotter Gauge: parktool.com/en-us/product/spoke-bearing-and-cotter-gauge-sbc-1
• UP-SET Utility Pick Set: parktool.com/en-us/product/utility-pick-set-up-set
• ASC-1 Anti-Seize Compound: parktool.com/en-us/product/anti-seize-compound-asc-1
• PPL-1 PolyLube 1000™ Lubricant (Tube): parktool.com/en-us/product/polylube-1000-lubricant-tube-ppl-1
• HPG-1 High Performance Grease: parktool.com/en-us/product/high-performance-grease-hpg-1

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➤ Fix It:
Did you know that Park Tool is the #1 resource for bicycle repair education?
• Visit our YouTube Channel: youtube.com/parktool
• Visit the Repair Help section of Parktool.com: parktool.com/repairhelp
• Check out The Big Blue Book of Bicycle Repair: parktool.com/product/big-blue-book-of-bicycle-repair-4th-edition-bbb-4

➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our YouTube channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.