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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 11-17-09, 08:15 PM   #1
solbey11
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Shmano 105 Issues

First off, I bought an 08 Trek 1.5 roadie last spring. First 'real' bike and I ended up loving it. It came with Shimano Sora, Tiagra, and Bontrager components. This summer I decided to upgrade so I went with a full Shimano 105 10spd group. And I am a bargain shopper so I got it all off of Ebay. I had the group installed my my LBS.

Now after a few months and a couple hundred miles, the left shifter doesn't work and the bottom bracket is creaking. I took it to the LBS for the creak and they said the cup loosened up and they retightened it. I told them to adjust the cables as well since it hadn't been done since the group was installed. The next ride the BB started creaking again and that's when the shifter stopped working.

After doing some searching I found the shifter is a common issue with the 5600 series but the BB just makes me angry. I did my research before I bought and almost everyone claimed the 105 series is a great quality group. But 2 of 8 components failed in a couple months and I am very disappointed. Should I just replace the BB and shifter and try again or should I sell what still works and 'make the leap' to Sram Rival or Force?

I'm just a newb looking for a little direction. And since I bought everything off of Ebay, I don't have any warranty to fall back on.
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Old 11-17-09, 08:18 PM   #2
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Shimano will warranty the left shifter pretty much no questions asked
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Old 11-17-09, 08:29 PM   #3
solbey11
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Do I need to run it through my LBS or do I have to contact Shimano directly? I work at a car dealership in the parts department and most auto manufactured won't warranty a part if there is no proof of purchase or a receipt. I was under the impression I wouldn't have any warranty since the shifters were bought off of Ebay. And they were new take-offs as well.
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Old 11-17-09, 08:30 PM   #4
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Lbs
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Old 11-18-09, 10:35 AM   #5
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Work with the LBS and see if they can help with the shifter.
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Old 11-18-09, 10:41 AM   #6
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If the shifter is used, a common problem is the factory grease hardens, making it innoperable. Flushing with WD40 often solves the problem. If that fixes the problem, do the right shifter also.
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Old 11-18-09, 10:43 AM   #7
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For the bottom bracket creak, if tightening made the creak go away for even a shot while, read up on how to install one, take the bike apart, and put it back together properly. It's likely that your LBS is skipping a step. If your frame hasn't been faced for an external bearing BB, get that done as well while it's apart. Shimano's BBs are high quality parts and unless you got a rare defective unit, it shouldn't creak.
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