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Encrusted Locktite on pressfit bb shell

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Encrusted Locktite on pressfit bb shell

Old 03-22-19, 02:30 PM
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masi61
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Encrusted Locktite on pressfit bb shell

So I have an old Klein Quantum that had the pressfit square taper crank axle. I got rid of that by knocking it out. I purchased Phil Wood pressfit bearing cups with 24mm through hole for Shimano Hollowtech cranks.

The bottom bracket shell shell has a lot of amber colored hardened glue like substance in there that I assume is dried Locktite. I donít want any interference when I use my bearing press to press in the Phil Wood cups.

Is is there a solvent that will easily dissolve this hardened amber residue? Or would som crocus cloth be a more logical way to go? I just donít want to do any unnecessary damage to the bb shell.

Thanks for any help you can share...
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Old 03-22-19, 03:47 PM
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tried heat yet?
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Old 03-22-19, 05:01 PM
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Originally Posted by fietsbob View Post
tried heat yet?
Iíll start w/ WD40 & fine sandpaper. Never thought about heat.
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Old 03-23-19, 06:53 AM
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If it really is Locktite or a similar thread locker, Acetone will dissolve it.
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Old 03-23-19, 07:12 AM
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Originally Posted by HillRider View Post
If it really is Locktite or a similar thread locker, Acetone will dissolve it.
good to know. Will work on this today!
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Old 03-23-19, 10:56 AM
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Sounds like epoxy to me.
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Old 03-23-19, 11:03 AM
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heat does break the bonding power of the Loc Tite threadlock compounds, according to the info I get (online)


good luck .. hope you don't dissolve the epoxy bonding the carbon fiber together..





...

Last edited by fietsbob; 03-23-19 at 11:06 AM.
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Old 03-29-19, 01:28 PM
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Originally Posted by fietsbob View Post
heat does break the bonding power of the Loc Tite threadlock compounds, according to the info I get (online)


good luck .. hope you don't dissolve the epoxy bonding the carbon fiber together..





...
This is an aluminum Klein Quantum that I believe is from 1988 or 1989. No epoxy binder or carbon fiber here - except for the Ritchey Comp fork Iím using.
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Old 03-30-19, 07:27 AM
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I would stay away from an abrasive like sand paper or emory tape, which could create new issues. Heat will work but is a mess to clean up. I have used acetone, mek, Permatex gasket remover, all work after soaking unless it was red locktite which was very difficult but as you knocked it out I doubt it was red.
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Old 03-30-19, 07:38 AM
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Goof Off works surprisingly well. Just be careful with the paint! Depending of the type of paint it will also remove it!

Maybe use a cotton swap and apply it carefully on the threads? I let it sit a bit and usually things come right off. You may need to repeat a few times to remove it all.
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Old 04-01-19, 09:45 PM
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Originally Posted by HillRider View Post
If it really is Locktite or a similar thread locker, Acetone will dissolve it.
Careful. It will also dissolve most paint. And IIRC the Klein is aluminum, but acetone will mork up CF frames.
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Old 04-02-19, 09:29 AM
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If it is amber in colour, I would guess it is Loctite 641 retaining compound, not a thread locker.
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