Frame is Scott Scale 30 and its bb shell is 89,5mm wide. Shimano teh doc syas that with this width I have to use 2,5mm spacer between bb cup and frame. I removed the old bb and there wasn´t this spacer. Do I have to use it with new bb? Everything worked fine exept left bearing got stuck(rusty).

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"Nothing compares to the simple pleasure of a bike ride"
Scale 30
Schenk 007
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If your old crankset was the same make and model, then you probably do not need the spacer b/c you would have noticed difficulty while shifting. Therefore, if your Shimano crankset and BB are different, then you should consult the Scott manual.

I only replaced the BB and did not put this spacer. Just don´t understand, why Shima says it should be there.

_________________
"Nothing compares to the simple pleasure of a bike ride"
Scale 30
Schenk 007
My blog