Repair Guide / Drivetrain See also:
Bicycle Drivetrain Tutorials
Video tutorials about drivetrain maintenance and repair.
Repair Guide / Drivetrain 
Order Parts & Tools
How To Check For Chain Wear
Demonstrates how to measure a worn out chain using Sheldon Brown’s ruler technique.
Cassette, Chain, Chainring, Drivetrain, Freewheel
How To Use a Quick Release Chain Link
Shows how to disconnect and reconnect two of the most common quick release chain links.
Chain, Drivetrain
How To Use a Chain Tool To Break a Chain
How a chain tool works, and how to use it to disconnect and reconnect your bike chain.
Chain, Drivetrain, Tools
How To Shift Your Gears
Learn how to use your full range of gears: applies to 21, 24, and 27 speed shift systems.
Derailleur, Drivetrain, Gears, Shifter
How To Replace A Freewheel
Demonstrates how to remove and install a traditional thread-on freewheel cluster.
Drivetrain, Freewheel
How To Replace Your Chainrings
Basic removal and installation instructions for 5-bolt chainrings on 3-sprocket systems.
Chainring, Drivetrain
How To Loosen a Stiff Chain Link
Stiff chain links cause noise, shifting problems, and even injury. Watch how to fix it by hand!
Chain, Drivetrain
How To Clean and Lubricate a Chain
Frequent chain cleaning and lubrication will help keep dirt off your chain and prevent wear.
Chain, Cleaning, Drivetrain, Lubrication, Oil
How To Replace a Freehub Body
Demonstrates how to remove and install a cassette freehub body. Requires a hub overhaul.
Cassette, Drivetrain, Freehub, Freewheel, Hub, Wheel
How To Replace a Cartridge Bottom Bracket
Demonstrates how to remove and install a sealed cartridge bottom bracket.
Bearings, Bottom Bracket, Drivetrain
