Powered by Outside

How do I get this crank off?

PB Forum :: Mechanics' Lounge
How do I get this crank off?
  • Previous Page
 Post Message | Latest Comment
Author Message
flag Bananafish
Posted: May 21, 2012 at 10:11 Quote
How do I get this crank off and what tools do I need? Thanks.

photo

photo

photo
flag frodo8191
Posted: May 21, 2012 at 10:37 Quote
Go into halfords, they sell the crank puller tools and also the bb tools
flag iffy
Posted: May 21, 2012 at 10:44 Quote
OK you get a blowtroch a chisel and a lump hammer....
or have a look here

and here

Salute
flag Bananafish
Posted: May 21, 2012 at 11:11 Quote
I don't see whats holding the crank in? How does it come out? I have that tool.
flag frodo8191
Posted: May 21, 2012 at 11:13 Quote
It's tight on the splines, you fit a tool with an outer bolt that screws into the crank then another bit inside that bolt is turned and it presses against the bottom bracket and essentially pulls the crank arm off
flag GenericName
Posted: May 21, 2012 at 11:15 Quote
Thats a hollowtech II Crank (or other manufacturers equivalent). The axle and driveside crank are one piece, its just held in by the non driveside crank being attached on by pinch bolts.

It should just pull out, if its a little bit siezed, tap the other end of the axle sharply with a plastic/rubber mallet, or use a hammer and a piece of wood. It should pop out nicely.
flag Bananafish
Posted: May 21, 2012 at 11:21 Quote
It isn't pulling out, must need a tool?
flag Bananafish
Posted: May 21, 2012 at 11:55 Quote
is the spindle held in by one of the external bearing cups?
flag GenericName
Posted: May 21, 2012 at 12:02 Quote
It shouldn't be. The cups are just to hold the bearings in, and the axle slides through and spins on them.

try undoing the non-driveside bearing cup, that might help free the spindle.
flag Shoe2190
O+
Posted: May 21, 2012 at 12:03 Quote
Bananafish wrote:
is the spindle held in by one of the external bearing cups?

Hit it hard with a rubber mallet there is nothing holding it in other than built up grit and friction.

edit
1.20 in this
flag Bananafish
Posted: May 21, 2012 at 12:13 Quote
GenericName wrote:
It shouldn't be. The cups are just to hold the bearings in, and the axle slides through and spins on them.

try undoing the non-driveside bearing cup, that might help free the spindle.

my tool is this http://www.evanscycles.com/product_image/image/070/8f5/fb0/27378/product_page/ice-toolz-hollowtech-ii-crank-adaptor-tool.jpg

can't loosen the bearing cup because the protuding bit of the spindle is in the way.

I have tried smacking it out with a bit of wood and hammer but the wood is getting imprinted with the spindle..... dunno what to do Blank Stare
flag ninjatarian
Posted: May 21, 2012 at 12:19 Quote
Unsecure image, only https images allowed: http://cdn.dickblick.com/items/351/36/35136-1008-2ww-m.jpg

Tapa, tapa, tapa. Good luck!
flag Bananafish
Posted: May 21, 2012 at 13:03 Quote
just to clarify I am meant to be smacking this with a mallett? because it isn't budging
photo
flag ninjatarian
Posted: May 21, 2012 at 13:10 Quote
Yes sir. Take a rubber mallet and give it some hard whacks making sure to brace the frame so it doesn't move taking energy away. Judging by that pic, its is pretty gummed up and may take a few blows to work free. Make sure you hit it squarely, any off axis blows wont help. The other option is to put a piece of wood of the end and hit the wood with a regular hammer, might give you some extra force.
flag ninjatarian
Posted: May 21, 2012 at 13:13 Quote
One other option, if you have the tool, is to unscrew the bearing cups from the frame. It will back off over the axle.

I prefer the socket type-
Unsecure image, only https images allowed: http://venturesportimports.com/images/BM09-ST-ABB-01-K.jpg
  • Previous Page

 


Copyright © 2000 - 2026. Pinkbike.com. All rights reserved.
dv65 0.016252
Mobile Version of Website