Worn Bottom Bracket Spindle: Diagnose & Replace (24mm/30mm)
Crank arm wobble or gritty spin? Check spindle wear with a micrometer—replace if diameter loss exceeds 0.1mm. Step-by-step diagnosis and fix inside.

Crank arm wobble or gritty spin? Check spindle wear with a micrometer—replace if diameter loss exceeds 0.1mm. Step-by-step diagnosis and fix inside.

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