Forum home Mountain biking forum MTB workshop & tech

Gear shifter clamp bolt rounded out

The SpidermanThe Spiderman Posts: 5,625
edited March 2012 in MTB workshop & tech
I`ve just bought a second hand bike and the l/h shifter clamp bolt has rounded out.

Any suggestions for removal?

I have tried cutting a slot into it with a hacksaw but can`t seem to get enough leverage on it for it too loosen.


(Its an M770 XT shifter.)
2006 Giant XTC
2010 Giant Defy Advanced
2016 Boardman Pro 29er
2016 Pinnacle Lithium 4
2017 Canondale Supersix Evo

Posts

  • Tried drilling from the other side?

    Alternatively cut the bolt (between the two parts of the clamp) to relieve the tension and then you should be able to remove them easily.
  • 1mancity21mancity2 Posts: 2,355
    Tap a slightly bigger Torx key into it that may work or as above or drill it and reverse thread remove it.
    Finished, Check out my custom Giant Reign 2010
    Dirt Jumper Dmr Sidekick2
  • 1mancity2 wrote:
    Tap a slightly bigger Torx key into it that may work or as above or drill it and reverse thread remove it.

    thats my normal course of action.
  • An easi out stud extractor simply screwed onto the allen key head recess sorted it.And temporarily fixed by means of a brake lever clamp stolen from my son`s bike........Phew! :)
    2006 Giant XTC
    2010 Giant Defy Advanced
    2016 Boardman Pro 29er
    2016 Pinnacle Lithium 4
    2017 Canondale Supersix Evo
  • tofu21tofu21 Posts: 359
    1mancity2 wrote:
    Tap a slightly bigger Torx key into it that may work or as above or drill it and reverse thread remove it.

    thats my normal course of action.

    That would e my proffered method along with a socket set.
Sign In or Register to comment.