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Old 03-13-21, 09:19 PM
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travbikeman
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Location: Martinsburg WV Area
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Bikes: State 4130 Custom, Giant Trance 29

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Threadlock on a bottom bracket

Does it make sense to have threadlock on a bottom bracket, even though it is torqued properly? I had noticed that my new Scott Aspect, already had severe crank stiffness and crunching noise.

It has the threaded Shimano MT-500 hollowtech. Bike shop I bought it from told me to bring it in, would be 1-2 weeks before they look at it and fix it for just a $20 part.

Well, fuel to drive the bike to shop (40 miles away) and then to pick it up would be about $16 alone. So I decided to just replace the bottom bracket with something a bit better the Shimano MT-800 threaded.

My question, is it normal to put threadlock on these bottom brackets? It really was tough getting this off even with breaker bar.

So much so, that look at what happened with my tool. Where the 1/2" to 3/8" adapter connects to the Park Tool:




Not sure if I'm going to be able to separate the two tools. Nor am I sure if Park Tools will warrant a replacement for the tool since it appears really weak for the metal to fatigue like this.

Should I be using a different bottom bracket tool?
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