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clicking sound in crankset

Old 04-29-15, 09:10 AM
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clicking sound in crankset

I know this topic has been discussed numerous times and there seems to be as many causes/solutions as there are internet threads about it. However, these sheer numbers make it difficult to figure out my own specific problem.

I recently installed a brand new hollowtech II BB for my Deore crankset. I used a torque wrench for the cups and greased as per Shimano instructions. When I went to install the right crankarm, the fit thru the bearings was incredibly tight but I finally was able to get it thru. I installed the left crankarm, again per Shimano instructions and with a torque wrench.

From the very first ride on this new BB, I experienced a clicking noise. This is 4-5 distinct clicks, always as the right crankarm passes over the 12 o'clock position. I uninstalled everything but the left BB cup and reinstalled and the sound is still there. I then took everything off and transferred to a different bike and the clicking sound is still there.

The sound doesn't start immediately, but rather after a few minutes and a mile or two of riding. I vaguely remember reading someone with this same observation but that wasn't yet apparent with mine so I didn't pay particular attention to the relevance and now I can't find that particular conversation.

I am using the same pedals, seatpost and saddle on both bikes but everything is tight on all of those.

All I can think of is that it is simpy the new bearings. If so, could I have damaged it in trying to get the right crankarm in when it was so tight?
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Old 04-29-15, 09:14 AM
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Did you check the chainring bolts?
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Old 04-29-15, 09:35 AM
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The fall back solution for silencing noises that are otherwise unable to be isolated is to take everything apart and reassemble. This includes pedals, ring bolts, saddle clamps, stem clamps as well as the usual crank/BB. Also look for non condition things like the ft der cable end contacting the crank arm (which happens at about 12 o'clock. Andy.
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Old 04-29-15, 09:50 AM
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I had a creaking sound in a crank (it was not an external BB type, though). I re-seated the main bolts, took the chainrings off and re-installed...still there. It turned out to be the BB, but not because of bearings. I simply put new grease on the threads of the cups.
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Old 04-29-15, 10:04 AM
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Originally Posted by Ronno6
Did you check the chainring bolts?
I checked three of them (removed and replaced) but the fourth is stripped and exhibits no movement at all. I was planning to just wait for the chainring to need replacing before dealing with the stripped bolt (actually the sleeve on a Wolf Tooth Components dual hex key bolt/sleeve combo).
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Old 04-29-15, 02:30 PM
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For the last few years I have been using teflon pipe thread tape on my BB cups in order to alleviate persistent clicks.
I have not had a problem since.
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