Diagnosis
Tools
Parts and Components
Bike Maintenance
OSU Fun Facts
100
The bike suddenly feels squishy and won't roll well.

What is a flat tire?

100

This tool is used to remove and reinstall pedals.

What is a pedal wrench?


100

This part keeps the chain on the chainring and moves it from gear to gear in the front.

What is a front derailleur?

100

This preventative check involves inflating tires to the correct PSI before every ride.

What is checking tire pressure?

100

OSU is located in this Oregon city.

What is Corvallis?

200

The front wheel makes a rubbing sound once per revolution.

What is a misaligned brake pad or rotor?

200

This tool holds a wheel in place for precise truing and tensioning.

What is a truing stand?

200

This part connects the crank arms and allows them to spin in the frame.

What is a bottom bracket?

200

This keeps your drivetrain quiet and prevents rust.

What is lubing the chain?

200

These two Oregon cities host additional OSU campuses.

What are Bend and Newport?

300

There is a creaking or clicking noise only while pedaling.

What is a loose bottom bracket?

300

This tool is used to pull crank arms off square taper or splined bottom brackets

What is a crank puller?

300

This component houses the pawls and ratchet mechanism that allow coasting on a rear wheel.

What is a freehub?

300

This adjustment prevents uneven spoke tension and brake rub.

What is truing the wheel?

300
This is OSU's president.

Jayathi Murthy

400

A rear wheel wobbles side-to-side when spun freely.

What is an untrue wheel or loose spokes?

400

This tool checks for chain wear by measuring elongation.

What is a chain checker/chain wear gauge?

400

This threaded part secures the cassette onto the freehub body.

What is a lockring?

400

This major service involves disassembling, cleaning, greasing, and reassembling moving parts like hubs, headset, and bottom bracket.

What is an overhaul?

400

This is Benny the Beaver's full name.

What is Benjamin Franklin Beaver?

500

The chain jumps between gears or skips teeth, especially under load.

What is a worn cassette or stretched chain?

500

This tool threads into the rear dropout to help align shifting accuracy.

What is a derailleur hanger alignment gauge?

500

This internal component manages oil or air pressure to control compression and rebound in suspension forks.

What is a damper cartridge?

500

This service restores firm, responsive braking by removing air and old fluid from hydraulic brake lines.

What is a brake bleed?

500

This OSU alumnus became the first American to walk in space.

What is John Young?