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 Post subject: Crank removal
PostPosted: Sun Feb 22, 2009 10:47 pm 
Retro Guru
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Joined: Sat Jun 21, 2008 12:20 am
Posts: 862
Location: St. Helens
Hi guys,struggling removing non drive side crank.It,s a square tapered flavour.Already snapped one extractor tool,bugger is siezed solid,any tips to loosen it up?


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 Post subject:
PostPosted: Sun Feb 22, 2009 10:50 pm 
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Joined: Sun Jul 29, 2007 4:05 pm
Posts: 1193
Location: Konada
stick an old handlebar over the extractor handle for leverage. seen my lbs guys do that I think.


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 Post subject:
PostPosted: Sun Feb 22, 2009 10:53 pm 
Old School Grand Master
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Joined: Sat May 20, 2006 2:56 pm
Posts: 4776
Location: No brakes? Way to commit soldier.
If extractor tools are snapping, I'm guessing that leverage isn't a problem :)

Is the crank arm a 'keeper' or can you destroy it?

If you're binning it, use a small saw to make a diagonal cut across the top of the arm (bottom bracket end) down to the bb axle, then drive a small chisel into the cut. This spreads the arm out at the taper and the arm will come off quite easily when 'encouraged' with a mallet.

What type of extractor are you using?


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 Post subject:
PostPosted: Sun Feb 22, 2009 10:58 pm 
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Location: St. Helens
Crank hopefully a keeper.using a park tool ccp-22 extractor


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:02 pm 
retrobike rider
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Joined: Tue Nov 11, 2008 12:28 pm
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Location: rutland
lay the bike on its side and pop a bolt in a few turns and fill the area with diesel . if you dont have that to hand use a water dispersant . wd40 or gt85 if you want it to smell nice :lol:

leave over night


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:03 pm 
Special Retro Guru
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Location: busy forgetting how to edge flip on a 11x11 monster cube///...
place a set of wedges between the crank arm and the bb cup.......use a g clamp to compress them in turn removing crank arm ...u may damage bb doing this but it does work.....lbs should have a set...if you do it yourself dont forget to grease the wedges ok.


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:12 pm 
East Midlands AEC
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Joined: Thu Oct 05, 2006 7:45 pm
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Location: Derby, UK
some people have said just remove the crank bolt and ride round for a while and it may work itself loose.


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:17 pm 
Special Retro Guru
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Location: busy forgetting how to edge flip on a 11x11 monster cube///...
that only works if your out in the middle of nowhere up the side of the mountain when its raining at night and your phone doesnt work..... :lol:


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:17 pm 
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Joined: Sat Jun 21, 2008 12:20 am
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Location: St. Helens
perry wrote:
lay the bike on its side and pop a bolt in a few turns and fill the area with diesel . if you dont have that to hand use a water dispersant . wd40 or gt85 if you want it to smell nice :lol:

leave over night

I'll give this a whirl tonight mate,cheers,don't fancy the wedge option.Hope it don't come to that.


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 Post subject:
PostPosted: Sun Feb 22, 2009 11:27 pm 
Special Retro Guru
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Location: busy forgetting how to edge flip on a 11x11 monster cube///...
i should have said u use 2 wedges ...1 on either opposite side and compress with the glamp...it never fails .


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