Join Date: Sep 2008
Location: Kettering OH
Bikes: Trek 520, Cadex CFM2
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How long should a BB last?
I have 2009 Trek 520 with 2,000 miles on it. I just rode 67 miles in Michigan last week and had no problems. I roof racked the bike back to Ohio and on my morning commute this morning, I noticed a creaking-clicking noise. I was able to isolate it to the drive train because the noise goes away when I coast. Also seems related to climbing hills and got worse as the day wore on.
I thought maybe I had a sticky chain link so I degreased and relubricated the chain, same for the rear derailleur and cassette. Noise persists and it's driving me nuts.
Could my BB be going bad after only 2,000 miles? I am a clydesdale and I don't baby the bike on hills. I have already replaced one chain due to stretch around 1,500 miles.
My 520 has external BB bearings. They have no model/part number on them. They are labeled "HD Mountain."
Can anyone tell me how to check this BB? I did give it a spin when I had the chain off and put my ear to the saddle horn. I couldn't hear any grinding or gritty sound.
I tend to fixate on annoying rattles and squeaks so any advice will greatly benefit my sanity.