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How to clean and grease a Shimano bottom bracket on a mountain bike. With the help of community members Félix and Paquito206, we show you this mechanics video, where we explain step by step how to clean and grease a Shimano hollowtech bottom bracket on the Wilier mountain bike of community member Félix. We show you the necessary tools and how to disassemble and assemble the bottom bracket, cranks, cups and dust covers. More information at: http://www.comunidadbiker-mtb.com