removing crank arms

[2020mad]

any one got any tips how to remove a set of profile crank arms without damaging arms or bike they are stuck on had soaking in wd40 all day and still cant get them off. cheers

[Rombloke]

profile removal tool.....7 quid

easy

Dave

[TwoBobRob]

You may end up sacrificing the bolts,  but you can wind them out a turn or two, steady the frame and then beat the crap out of them.  Something will move.....    Check to see if the gap has changed, wind the bolt out another turn or two and continue.  Noisy, but effective 

[TOMMY2WHEEL]

Crank puller or removal tool are the best to use. they seperate the arm from the shaft evenly with minimal ware to the splines or wedges. use what the crank manufacture suggest.

[weston]

there was no way of getting the one from my old bike. i had to saw through the spindle to get it off..

[greentoad]

Hi  :santa_wink:

If you do get stuck it might be worth visiting a local garage (if you know one) and using a puller, or buy one. They are quite handy.

http://buy1.snapon.com/catalog/catalog1.asp'tool=all&Cat_ID=124110&Cat_NAME=Pullers&store=uk

Example the 2 or 3 Jaw Pressure Screw -

http://buy1.snapon.com/catalog/item.asp?P65=&tool=all&item_ID=9952&group_ID=1171&store=uk&dir=catalog

It is most important to give the item a good soak, and then start to undo very slowly then tighten a little, spray then undo, tighten etc...

I also did a post a while back, and the Freeze Spray is very effective and is used on Large / Heavy Machinery down to small bolts etc when out in the field. That really is a must thing to have.

Hope this helps

greentoad

[wirewheel]

like the man says, usa the right tool, a profile tool no other way without fooking something up.

[diesel]

Here's what I use... Its very effective!

I use a medium size socket set extension bar that fits neatly into the end of the crank arm and dosent touch the sides. I then lay  the bike down onto some wood covered with towels. and give it a couple of hits with a hammer. If its really stuck in there proper, you maybe want to stand the bike up rather than lay it down. Put the towels round your legs instead and brace the bike against them.

It pops out nice and easily!

[ORB]

hammer is the best method of fixing anything, even a slow puncture.

[2020mad]

They wanted £16 at my local bike shop for removal tool so going to try diesels method tonight.

[TwoBobRob]

Just be a little bit careful bashing a socket with a hammer...  If its a chemical black impact socket with thick sidewalls, then whack away    but if its your regular chrome cheapy, they have been known to shatter.... Not often but I have seen in happen.   

[ORB]

my mate has a glass eye from smacking a crankshaft with a hammer.

[TwoBobRob]

..........is exactly what I'm on about...... a little caution there chap   

[Sanmarcopizza]

my mate has a glass eye from smacking a crankshaft with a hammer.

And I bet you bore it to sleep.

[oberonspacefruit]

lmao!!!!!

[jT Racing]

piece of bar or socket just amller than the opening, big hammer, tap tap tapppy tap whack.