I've been trying to get this crank removed for upwards of an hour and I just can't see to get it out. I'm using a crank puller and I'm ensuring not to cross thread the outer part but the pushing part is just unable to make it come out. I can practically stand on the wrench, I'm obviously doing something wrong. I put a screw in there just to see if it was making contact and that would help and I literally ground the head of the screw down.
There's something deeply wrong, any advice?
Edit: I've greased the threads of the tool to no avail, the tool clears the square hole but it is not inside the circular hole, not sure if this is normal.
by leyojohn
7 Comments
Crank puller head is probably the wrong type for that crank. It probably hits the sides of the hole instead of going thru it. Might be able to shove something between it
make sure your crank puller is actually touching the axle. some crank pullers come with a magnetic attachment that you can take off. if it’s not touching the axle then youre probably crushing the threads of the crank which can lead to it being impossible to remove the bb
What model crank puller are you using?
I have a crank puller where you have to remove a part for certain cranks – if you don’t do that you’re not pushing the crank off the axle but just pushing against the same part. It shouldn’t take that much effort so something sounds wrong.
Put the crank bolt back in, but only finger tight, the back it off by 1/8th of a turn. Go for a short ride and that should see the arm come loose. If it’s persistent, ride off a gutter or two.
I red that just going out and cycling around a block might loosen it enough to remove, haven’t tried it myself.
It looks like the crank arm is badly formed and isn’t actually centered on the spindle, and it looks like the crank puller is pushing on the right-hand side of the square taper. Very weird.
Anyway, I would try to find a small bolt that can slide inside the bolt hole on the spindle, and whose head is small enough to fit inside the crank taper. This will ensure that the crank puller is able to push against the bolt and spindle, and not against the crank itself.