Removing old Shimano 105 crank driving me nuts!

sindirt Posts: 6
edited November 2015 in Workshop
Hi all
So trying to remove an old Shimano 105 crank from my Giant TCR (at least 10 years old). Bought a crank puller shown in the photo but this is not the right tool, any ideas?


  • keef66
    keef66 Posts: 13,123
    edited November 2015
    Looks like the old Octalink. Most were self-extracting.

    Is there an outer cap you've removed? Then a hex head bolt? If so, screw them both all the way back in, only finger tight. Then stick a suitably sized allen key through the hole in the outer cap and into the bolt. As you unscrew the bolt it will push on the underside of the cap and pull the crank off the axle splines.

    If it's not a self extracting version and / or the outer cap's missing or buggered, assuming your extractor actually threads properly into the crank, you need something round to sit on the end of the hollow axle for the extractor to press against. My crank extractor had one with it. Some small coins fit, but using just one means you're more likely to punch a hole in the coin...

    ETA viewtopic.php?t=12731087
  • nicklouse
    nicklouse Posts: 50,675
    you need the ISIS/Octalink crank puller. or if the cap and lock ring are there then they are the puller part of the self extracting bolt set up.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • term1te
    term1te Posts: 1,462
    You can use that tool, but you need to insert something that you can brace it against. I used a coach bolt I had laying around. I needed to file the circular head of the coach bolt to make it fractionally smaller (in diameter), then it fitted perfectly between the bottom bracket and the chainset, basically blocking the hole without restricting the chainset. Then just use the puller as normal. There may be a thin washer at the bottom of the treaded part of the chainset, I can't see in the photo, but if there is, you'll need to remove it first. I tried with some coins first, but none fitted exactly, and they were a pain to get to sit properly. The advantage of the coach bolt is that the treaded shaft guides it in nicely.

    Don't do this at home... but the easiest way to file the head of the coach bolt was to clamp it in the chuck of an electric drill, spin it up and hold the head against a file held in a vice. I can't remember the exact size, but I needed to take off perhaps 0.2mm to get it to fit perfectly.

    If you don't want to go down the DIY route, then you need one of these
  • Hi all, thanks for the tip, managed to get an insert for the crank puller I had so onto the next tool requirement, looks like I need some sort of a notched spanner to remove the metal ring in the photo, could someone advise what this is called so I can locate one?
  • bbrap
    bbrap Posts: 610
    I've always known them to be called "bottom bracket tools". There are a number of different ones available depending on which pattern of slots and size you have. I've removed them using an old fashioned "C" spanner, you just need to be careful to not let it slip. I always clamped the spanner in a vice and then turned the frame until loose enough to undo by hand.
    Rose Xeon CDX 3100, Ultegra Di2 disc (nice weather)
    Ribble Gran Fondo, Campagnolo Centaur (winter bike)
    Van Raam 'O' Pair
    Land Rover (really nasty weather :lol: )
  • keef66
    keef66 Posts: 13,123
    Given that you're unlikely ever to need the tool again, I'd pop it in to your local bike shop and get them to remove it.

    If you're hell-bent on owning the tools and DIY, have a look on the Park Tools website. They do tools for every conceivable kind of BB.
  • me-109
    me-109 Posts: 1,915
    Or a hammer and anything that will work as a drift - old screwdriver, centre punch or genuine drift tool.