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Old 04-21-13 | 12:09 PM
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Campag4life
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Joined: May 2007
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I would say the position of your Shimano crank arm is incorrect. It is too close to left side of the frame BB.
Next step is to hold the frame seat tube with your right hand and pull and push on the left crank arm shown with your left hand.
This will reveal if there is any axial play. My guess is...the crank is improperly installed with insufficient spacers on the left side.
Shimano cranks with dual pinch bolts can be attached laterally in multiple positions. It looks by the pic, the arm is actually scraping on the side of the BB.
If you aren't technical, take it to your bike shop to have the crank properly set up. It is a simple matter but you may need another spacer or two...remove the left arm and properly adusted lateral lash.
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