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how to remove seized rounded allen bolt?

Discussion in 'A4/S4 forum(B5 Chassis)' started by 205man, Mar 17, 2013.

  1. 205man
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    205man Active Member

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    [Mar 17, 2013]
    as some you know my water pump gave up, so my mate came round to help me pull car apart but we hit a snag.

    we cant get the idle pulley/bracket off, because the bottom allen key bolt is completely round inside and pretty sized, and the one above seem to be also seized but the head seems ok i just need better allen socket before i risk the head on that going.

    so an ideas on how to remove rounded allen bolt, ive seen load of ideas on the net, but thought id ask what has worked for you.

    the strange thing is the last time this was taken apart was 4 years ago when main dealer fitted new cam belt etc ???????

    cheers
    #1
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  3. towcestervag
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    towcestervag Member VCDS Map User

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    [Mar 17, 2013]
    i use irwin extractors
    they cut into the outer part of the bolt and work very well
    #2
  4. cerips
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    cerips Member

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    [Mar 17, 2013]
    Irwin extractors or hammer in a Torx or XZN bit.
    #3
  5. Blue_Thunder
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    Blue_Thunder Active Member

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    [Mar 17, 2013]
    +1 for the Irwin Bolt Grips. Excellent bit of kit!
    #4
  6. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Mar 17, 2013]
    xzn and a hammer here, not failed yet.
    #5
  7. Todd1983
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    Todd1983 Member

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    [Mar 17, 2013]
    Hammer in a Torx
    #6
  8. PAULF
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    PAULF Active Member

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    [Mar 17, 2013]
    +1 for the Torx bit, or I have a stud remover that sometimes works, or pipe stilsons.
    #7
  9. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Mar 18, 2013]
    Or weld on a standard bolt.
    #8
  10. Steve_D
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    Steve_D Member

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    [Mar 18, 2013]
    I used an angle grinder to make a standard socket fit on... came off a treat and replaced the bold.

    That was on the rear caliper carrier bolt
    #9
  11. ctd
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    ctd Member

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    [Mar 18, 2013]
    torx bit for me every time
    #10

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