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Shimano Bottom Bracket Removal Tool

(6 posts)
  • Started 11 years ago by Kenny
  • Latest reply from Kenny
  • This topic is not resolved

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  1. Kenny
    Member

    Summary: does anyone have a bottom bracket removal tool that can borrow to remove what I suspect is a BB-UN26 from my commuter?

    Detail: My bottom bracket was giving me cause for concern, so I bought a bunch of tools (socket wrench, crank puller, bottom bracket tool) so that I could remove my cranks, find out what the bottom bracket is, go buy a new one, replace the old one, put it all back together again, and hopefully the creaking noises that have been getting worse with each passing day would hopefully go away.

    I got as far as getting my cranks off tonight, but the supposed "this will get all bottom brackets off" tool I purchased from my LBS is (you've guessed it) completely inappropriate for the bottom bracket.

    Since I can't take the BB out, I can't prove definitively what it is, but knowing what else is on the bike, and when I got it, and from looking at pictures on teh interwebs, I'm fairly sure the bottom bracket is likely the Shimano BB-UN26, which I believe can be removed with a TL-UN52, or more usefully, one of these:

    http://www.wiggle.co.uk/shimano-bottom-bracket-removal-tool/

    So I was going to buy one, and in the meantime was putting the cranks back on the bike, when the bolt on the drivetrain side snapped when I was tightening it. The bolt is therefore completely stuck now inside the BB, rendering it completely useless and 100% needs replaced. I'm now therefore even more keen than before to get this tool sharpish to get the BB out and replaced.

    So, does anyone happen to have a BB removal tool, much like the one I linked to above, that I could potentially borrow?

    Posted 11 years ago #

  2. Baldcyclist
    Member

    I have one you can have, if you can pick up from Edinburgh Uni area.

    Posted 11 years ago #

  3. Kenny
    Member

    Cheers, @Baldcyclist, I've sent you a PM.

    Posted 11 years ago #

  4. allebong
    Member

    Depending on how long the BB has been in there and whether it was greased properly when originally installed you may have a fight on your hands to get it out. I'm assuming you know about the reverse threading on the drive side (or is it the nondrive side? can never remember) but sometimes the things just get seized in and all the torque in the world won't budge it. If the tool starts slipping and breaking splines I'd just get it to a bike shop before you truly ruin it - speaking from experience.

    Having said that it'll most likely ease out with no real difficulty.

    Posted 11 years ago #

  5. Coxy
    Member

    Just been taking out a BB this very evening. You can use a rear quick-release skewer to hold the tool in place if the axle is hollow.

    In the past I've had to grab the tool in a vice and turn the frame to get it out!

    Don't forget - do the non-drive side first. Turn the spanner anti-clockwise (top towards the front of the bike) which will remove the end cap. Then the drive side clockwise (again top towards the front of bike) to remove the BB itself.

    I have the tool if you want to borrow. And a big steel mallet!

    Posted 11 years ago #

  6. Kenny
    Member

    Thanks for the offers.

    As it transpires, I took the MTB to work today, then went to EBC Canonmills to pick up both the Shimano BB removal tool (the right one this time) and a replacement BB, as they could tell I needed a 68 / 113 one. Fitted and looking good. Back on the roadie commuter tomorrow. It's a lot harder work commuting on a MTB.

    Posted 11 years ago #

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