Joined: Feb 2012
Posts: 19,373
Likes: 5,516
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Phil once made a tool for working on Shimano external cup BB bearings. Don't know if it would also work on yours. Most people will either just pull the bearing cartridge seals, flush and clean the old and add new grease. This can be done with the BB still installed. Or most people will replace the entire BB with new. VERY few try to replace just the bearing and retain the "cup". Andy
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AndrewRStewart