Cranksets
Crankset styles, bottom bracket interface, removal, installation, and torque specs.
Lesson Details
Skills to cover in the shop
- Removal of common crank types
- Installation of common crank types
- Crank inspection
Supporting videos
Key procedures / notes
- Know the difference between three-piece (left arm, right arm, spindle) and two-piece (left arm + integrated right arm/spindle) systems.
- Self-extracting systems have the crank puller built into the crank.
- Always use correct tools and torque values for the specific crank interface.
Skill Checks: 9a (2-piece), 9b (3-piece). Diagrams: drivetrain, chainrings, cup-and-cone BB, cartridge BB. STEM: Gear Check Lab, Gear Ratio Lab.
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 70–76 (Chapter 7). Stop at Campagnolo Power Torque Cranks.