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  1. #1
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    Bottom Bracket Replacement

    Hi all,

    I own a M5.7c and will be replacing the bottom bracket for the first time. Will be using a Park press fit to remove and install a GXP BB92. Any tips/tricks, and anything this noob should be aware of? Thanks in advance.

  2. #2
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    Removal is the "fun" part but pretty similar to removing headset cups. The dust sleeve can make it hard to remove the BB cups but that's about the only real challenge. Installation is also simple. We do recommend using blue Loctite on the cups to eliminate any creaking and I like to install one cup at a time just to make sure nothing gets crooked on the way in.
    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  3. #3
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    Specifically where on the cup is the loctite applied? What tool do you use to press them in? Thanks..

  4. #4
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    I apply the loctite inside the bb shell, otherwise it just gets scraped off as you press the cup in. For pressing the cups in I just use a Park headset press.
    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  5. #5
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    Ah, thanks for the tip. Will do that. Looks like Park makes a couple of presses, which do you use?

  6. #6
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    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  7. #7
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    Got it done - rolls nice and smoothly! Thanks for the tips kenbentit!!

  8. #8
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    Bottom Bracket Replacement

    I see Chris King now doing press fit BB's. Are they going to be worth the cash or should I stick to Shimano?
    Phillip

    1994 Cannondale F900
    2013 Pivot Mach 5.7
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  9. #9
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    Bottom Bracket Replacement

    Shimano. I had a CK BB. Periodically lubing it was annoying especially in the winter. A Shimano or SRAM BB typically lasts a year unless you have a lot of stream crossings.

  10. #10
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    Quote Originally Posted by kenbentit View Post
    . We do recommend using blue Loctite on the cups to eliminate any creaking and I like to install one cup at a time just to make sure nothing gets crooked on the way in.
    If by 'blue' you mean 242, that's not what it's for. 242 is for threaded fasteners and it doesn't do much if anything worthwhile as a bearing retainer, loctite has an entire range of products for that application. Note if you are using it with a carbon frame you'll need a primer as well.

  11. #11
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    That is exactly what we are using and have been for several years now. The only purpose for the loctite is to help prevent creaking, not to retain the cups in the frame...
    Quote Originally Posted by customfab View Post
    If by 'blue' you mean 242, that's not what it's for. 242 is for threaded fasteners and it doesn't do much if anything worthwhile as a bearing retainer, loctite has an entire range of products for that application. Note if you are using it with a carbon frame you'll need a primer as well.
    Desert Sunset Calls/Upward, Pain, Perseverance/Welcome Solitude

  12. #12
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    Quote Originally Posted by kenbentit View Post
    That is exactly what we are using and have been for several years now. The only purpose for the loctite is to help prevent creaking, not to retain the cups in the frame...
    242 is a thread retainer, and isn't doing much of anything as a sleeve or bearing retainer. It's working for you because it's not needed in the first place. If you want actually creak prevention you'd be better off with a proper bearing retainer like 680. I use it all the time with great results. Or you could save the money and just use grease, it's all that's needed with a press fit that's within tolerance.

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