Honkdonk Posted May 3, 2017 Share I have a slight issue in that one of the two crank arm pinch bolts has a rounded head and I need to get the crank out to replace the BB. So with a rounded head I and my LBS cant get it out.. The bolt takes a 5mm allen key and is countersunk so I cant cut into it without causing major damage to the crank arm - its an XT crank with a 34t ring Any ideas? Link to comment Share on other sites More sharing options...
fanievb Posted May 3, 2017 Share I managed to moer a slightly smaller torx bit (can't remember the size) in the rounded head and remove it. remember to replace the other bolt and loosen both simultaneously/equally. if that fails a lot of patience and a 4mm drill bit. Link to comment Share on other sites More sharing options...
JanJan Posted May 3, 2017 Share Would you be able to fit a steel saw blade into the gap? Because then you would be able to cut off the bolt to remove the crank arm. You can then take the loose arm to a machining shop to drill and counter thread the bolt to remove it. Link to comment Share on other sites More sharing options...
BaGearA Posted May 3, 2017 Share Easy out Formallyknownas and King_Crispy 2 Link to comment Share on other sites More sharing options...
Formallyknownas Posted May 3, 2017 Share Easy outHave you got bud? I've got a brake set that I bought as a bundle with a stripped allen head. I'll gladly pay with a sixer of your preference. Link to comment Share on other sites More sharing options...
HowardSteele Posted May 3, 2017 Share Once you've tried the torx bit trick if you still stuck do it the proper way drill a hole and use an easy out. Midas sells a Easy out set for under R100 Link to comment Share on other sites More sharing options...
Skinnyone Posted May 3, 2017 Share Carefull application of a SHARP drill and drill the head off...done it before... Link to comment Share on other sites More sharing options...
BaGearA Posted May 3, 2017 Share Have you got bud? I've got a brake set that I bought as a bundle with a stripped allen head.I'll gladly pay with a sixer of your preference.I do , Pm Me Formallyknownas 1 Link to comment Share on other sites More sharing options...
BaGearA Posted May 3, 2017 Share Cost me almost nothing and they've saved my ass countless times Link to comment Share on other sites More sharing options...
droo Posted May 3, 2017 Share EZ-Out or Grabit. It's the right tool for the job. Drill hole, remove bolt. Job done. The hacksaw and screwdriver trick should not be employed in a professional workshop unless there are serious extenuating circumstances (in my humble opinion, of course...) Link to comment Share on other sites More sharing options...
droo Posted May 3, 2017 Share Cost me almost nothing and they've saved my ass countless times Do yourself a favour - make yourself some aluminium jaws for your vice. They will change your life for about 20 bucks and an hour of graft. Link to comment Share on other sites More sharing options...
V12man Posted May 3, 2017 Share I have a slight issue in that one of the two crank arm pinch bolts has a rounded head and I need to get the crank out to replace the BB. So with a rounded head I and my LBS cant get it out.. The bolt takes a 5mm allen key and is countersunk so I cant cut into it without causing major damage to the crank arm - its an XT crank with a 34t ring Any ideas?Change your LBS... Link to comment Share on other sites More sharing options...
BaGearA Posted May 3, 2017 Share Do yourself a favour - make yourself some aluminium jaws for your vice. They will change your life for about 20 bucks and an hour of graft.Will do Sir , currently using A piece of leather Link to comment Share on other sites More sharing options...
BaGearA Posted May 3, 2017 Share Will do Sir , currently using A piece of leather That vice is older than i am Link to comment Share on other sites More sharing options...
droo Posted May 3, 2017 Share That vice is older than i am No issues with million year old tools, I have a few. But steel jaws near a bicycle make my nuts tighten a bit. Amberdrake, BaGearA and Eugene Brown 3 Link to comment Share on other sites More sharing options...
Honkdonk Posted May 3, 2017 Share Change your LBS...Dunno hey.. I take Anton's word for it if **** gets real Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now