Originally Posted by
davidad
There should be a slight amount of drag when properly adjusted. This is preload and necessary for bearing life.
While light preload won't hurt, it isn't necessary for this BB. The radial needle bearings are preloaded already and aren't adjustable. The ball thrust bearing will work fine without preload. The OP needs to follow Shimano's instructions and adjust for free rolling with as close to zero play as possible.
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Last edited by FBinNY; 11-18-13 at 11:59 AM.