Billy-C Posted March 29, 2011 Report Share Posted March 29, 2011 hello i have just got a set of new cranks and a bb but im having trobel getting the old cranks off the old bb.. Its a square taper bb and i really want it off!! CAN ANYONE HELP? Quote Link to comment Share on other sites More sharing options...
robintrial Posted March 29, 2011 Report Share Posted March 29, 2011 put your crank (bb if one crank is removed) in a vise and put a large pipe over the crankpuller it is fairley easy from this point. Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted March 29, 2011 Report Share Posted March 29, 2011 Try using boiling water over the crank, then an extension bar off the crank puller like the guy suggested above. If that doesn't work, try striking the end of the crank puller while tightening to shock the crank loose. Last thing to try is loosening the crank bolt right off and riding around until it *hopefully* comes loose Alex Quote Link to comment Share on other sites More sharing options...
ForrestDump Posted March 31, 2011 Report Share Posted March 31, 2011 (edited) Try using boiling water over the crank, then an extension bar off the crank puller like the guy suggested above. If that doesn't work, try striking the end of the crank puller while tightening to shock the crank loose. Last thing to try is loosening the crank bolt right off and riding around until it *hopefully* comes loose Alex I would defiantly suggest heating the crank, but with a hair dryer instead as you can constantly heat the crank, its also a lot less hassle than having to heat it over and over with water, you could also try packing ice around the axle off the BB. If you loosen the crank bolt to see if the crank will hopefully slip off you might round off the taper on your bb so I wouldnt recommend that. When my cranks where stuck I gave the sections where the cranks touched the BB a good spray with some WD40, I would avoid using a bar to give more leverage though as the extra force may ruin the threads inside your crank or on the puller, however it's worth a try if nothing else works. Edited March 31, 2011 by ForrestDump Quote Link to comment Share on other sites More sharing options...
ogre Posted April 1, 2011 Report Share Posted April 1, 2011 buy a crank puller Quote Link to comment Share on other sites More sharing options...
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