Step-by-Step Guide: How to Tighten the Bottom Bracket on Your Mountain Bike
To tighten the bottom bracket on a mountain bike, first remove the crankset and chain, then remove the bottom bracket from the frame. Clean the threads and apply a small amount of anti-seize compound. Reinstall the bottom bracket and tighten it to the manufacturer’s recommended torque spec using a bottom bracket wrench. Finally, reinstall the crankset and chain and check for any play or wobbling in the bottom bracket.