Hubs
Hub anatomy, bearing systems, adjustment, overhaul, and common troubleshooting.
Lesson Details
Skills to cover in the shop
- Proper disassembly of front and rear hub (cup and cone)
- Proper hub inspection
- Proper assembly of front and rear hub (cup and cone)
- Proper hub adjustment
Supporting videos
Key procedures / notes
- Take notes/photos of parts orientation and thread counts during disassembly.
- Begin from the left side: remove seal, hold cone with cone wrench, loosen locknut counterclockwise, remove locknut/washers/cone.
- Catch bearings carefully; count and measure them; clean and inspect races and axle.
- Reassemble in reverse order; adjust free play so wheel spins smoothly with minimal side-to-side play.
Skill Check: 5 Hub Service Skill Check – Cup & Cone. Diagram: 5 Cup & Cone Hub Diagram.pdf
What you’ll do
Follow the procedures in the lesson document. Complete any note guides or worksheets, then perform the hands-on skill check.
Support materials
Recommended reading
Park Tool Big Blue Book: pages 42–46 (Chapter 4). Stop on page 46 at Oversized Axle Service.