SO FRUSTRATED with Crank Puller
03-02-11 | 08:10 PM
#1
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Joined: Feb 2011
Posts: 6
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SO FRUSTRATED with Crank Puller
I have a POS 2007 Norco Scrambler with a Shimano Tourney TX70 crankset.
BB-UN26 Bottom Bracket.
I am using a Park Tool CWP-7 Crank Puller.
The stupid thing seems to just push against itself when i install the crank puller. The inner bolt hits the crank arm just barely, and pushes on itself.
THIS MAKES NO SENSE!!! THE CRANK PULLER FITS RIGHT THROUGH THE NEW CRANKARM I BOUGHT AND THEY BOTH STATE THE SAME BOTTOM BRACKET IN SHIMANO TECH DOCS. HOW IS THIS POSSIBLE?
can i just hammer this $#@$@ piece of crap off; I am ready to chuck it at a wall.
I am worried I have already damaged the bottom bracket because of incorrect usage, but we'll see. Please help!
Bottom Bracket
https://techdocs.shimano.com/media/te...9830694234.pdf
https://techdocs.shimano.com/media/te...9830677388.pdf
BB-UN26 Bottom Bracket.
I am using a Park Tool CWP-7 Crank Puller.
The stupid thing seems to just push against itself when i install the crank puller. The inner bolt hits the crank arm just barely, and pushes on itself.
THIS MAKES NO SENSE!!! THE CRANK PULLER FITS RIGHT THROUGH THE NEW CRANKARM I BOUGHT AND THEY BOTH STATE THE SAME BOTTOM BRACKET IN SHIMANO TECH DOCS. HOW IS THIS POSSIBLE?
can i just hammer this $#@$@ piece of crap off; I am ready to chuck it at a wall.
I am worried I have already damaged the bottom bracket because of incorrect usage, but we'll see. Please help!
Bottom Bracket
https://techdocs.shimano.com/media/te...9830694234.pdf
https://techdocs.shimano.com/media/te...9830677388.pdf
03-02-11 | 08:29 PM
#3
Senior Member
Joined: Apr 2009
Posts: 39,897
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From: New Rochelle, NY
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
The tool you're using has 2 pushing ends. The large one is for spline drive hollow spindles, and the small one is for square tapers like yours/ You have to disassemble the tool and put it together with the smaller pusher at the threaded end.
Then withdraw it into the body until it's flush. Make sure the spindle bolt is removed and any washer below it, then thread the body onto the crank all the way to the bottom (about 5-6 turns). Once the body is bottomed in the crank, turn the center part to push the spindle out of the crank. Don't be surprised if it takes a decent amount of torque.
I hope this helps.
fb
Then withdraw it into the body until it's flush. Make sure the spindle bolt is removed and any washer below it, then thread the body onto the crank all the way to the bottom (about 5-6 turns). Once the body is bottomed in the crank, turn the center part to push the spindle out of the crank. Don't be surprised if it takes a decent amount of torque.
I hope this helps.
fb
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
03-02-11 | 08:54 PM
#4
Senior Member
Joined: Oct 2007
Posts: 5,773
Likes: 105
From: West Yorkshire, United Kingdom
I prefer the CCP-22 tool for this, but the CWP-7 is good to.
This is the process need to remove the crank https://www.parktool.com/blog/repair-...e-spindle-type can't imagin how you would damage the BB it you have just been using the tool, hitting it with a hammer in another matter tho.
This is the process need to remove the crank https://www.parktool.com/blog/repair-...e-spindle-type can't imagin how you would damage the BB it you have just been using the tool, hitting it with a hammer in another matter tho.
03-02-11 | 09:55 PM
#5
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Joined: Feb 2008
Posts: 2,149
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From: Arlington, VA USA
03-03-11 | 08:35 PM
#6
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Joined: Jan 2011
Posts: 234
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From: The Old Dominion
Bikes: Polygon Path 2 City Bike, Polygon Siskui D5 MTB
'The stupid thing seems to just push against itself when i install the crank puller.'
The bad news: There are no stupid tools, so....
The good news: The above guys answered the question for you.
The bad news: There are no stupid tools, so....
The good news: The above guys answered the question for you.
03-07-11 | 03:15 PM
#7
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 6
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I feel a little silly about this. Turns out who ever installed the crankset tightned the bolt too much and ended up warping the crankset on one side making the crank puller hit the crank pedal before hitting the bottom bracket. Either way it all came down to me not turning hard enough on the wrench.
Next time I won't be so gentle, thanks for your help everyone!
Next time I won't be so gentle, thanks for your help everyone!
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