Dowel Pin Stuck

Discussion in 'The Garage' started by indr, Jan 11, 2013.

  1. indr

    indr .

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    #1
  2. Twilight Error

    Twilight Error Going nowhere slowly

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    If the pin is tight enough to not spin, try running a tap in there to grab it.
    #2
  3. twinjet

    twinjet Been here awhile

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    If the dowel is hollow all its length, find a solid dowel that will just slip into the stuck hollow dowel, fill the cavity with oil then tap the solid dowel into the hollow dowel. Hydraulic pressure will force the hollow dowel out. (wear safety goggles).
    If the stuck dowel is solid, drill a smaller diameter hole from the other side and use a suitably sized drift pin to drive the dowel out from above.
    #3
  4. WRW9751

    WRW9751 7th Day Adventurist

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    Snap and Mac make inside/outside pliers. A little heat and a pair of those pliers might just do the trick.
    #4
  5. mouthfulloflake

    mouthfulloflake Not afraid

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    drive a self tapping screw into it, and then use a slide hammer to pull the screw out, hopefully with the dowel pin on it.
    #5
  6. bomber60015

    bomber60015 Anatomically Correct

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    then find a tap of the appropriate size, and be prepared to destroy it . . . . sometimes, an easy out (or similar) will rotate teh pin enough that it begins to walk out on it's own . . ..
    #6
  7. twinjet

    twinjet Been here awhile

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    Is this a car engine crankcase? Is the oil galley plugged above the dowel? Sometimes oil galleys are drilled then plugged at one end.
    #7
  8. Twilight Error

    Twilight Error Going nowhere slowly

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    Your best bet is a tap or an Easy-Out. The tap will create swarf that will need to be controlled, The easy-out may jam the pin tighter against the bore.
    #8
  9. bomber60015

    bomber60015 Anatomically Correct

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    dowel pins ARE made of stern stuff . . . . . . .drilling will be messy . . . . try to get it to turn
    #9
  10. sieg

    sieg Wearing out tires......2 at a time, day after day.

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    Easy out to grab and turn the dowel, while heating the aluminum case. The case will expand faster and greater than the steel dowel therefor freeing the dowel.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:eek:ffice:eek:ffice" /><o:p></o:p>
    #10
  11. mouthfulloflake

    mouthfulloflake Not afraid

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  12. Beezer

    Beezer Long timer

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    the only other thing I could add to the list is welding... put a piece of rod, screw, etc down one side and tack it with a wire feed. the heat will help too

    another desperate possibility is to take a tiny cutoff wheel on a Dremel & cut down one side enough to cave it in & get a bite. it prolly means putting a groove in part of the saddle, but I'm sure there is enough metal so it won't matter
    #12
  13. twinjet

    twinjet Been here awhile

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    An expensive but effective way to remove a hardened dowel if other methods won't work is to take the case to a high end tool and die shop that has an EDM machine. The EDM machine uses a carbide electrode in a fluid bath to eat away at the dowel. The expense would have to balanced against the cost of replacing the case.
    #13
  14. WRW9751

    WRW9751 7th Day Adventurist

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    If snap ring pliers won't fit in the hole it's probably to small for the other pliers.
    A tap or easy our and some heat to the case sounds like the best plan. A screw probably won't bite, to soft. The dowels are very hard.
    #14
  15. concours

    concours WFO for 41 years

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    This. Will work.
    #15
  16. SilkMoneyLove

    SilkMoneyLove Long timer

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    Just turn it upside down and let it fall out...duh :lol3

    OK. my real vote is to follow CONCOURS' endorsement of Sieg's idea.
    #16
  17. H96669

    H96669 A proud pragmatist.

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    Correct me if I am wrong, but doesn't it also bring oil under pressure to the bearings????
    #17
  18. D.T.

    D.T. Difficult but useful

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    :huh

    Uh, that don't look right.
    #18
  19. Maoule

    Maoule Been here awhile

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    That crankcase was prolly wore out anyway...the good news is you prolly don't need to fuck with that dowel any further:lol3
    #19
  20. Beezer

    Beezer Long timer

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    very important. the case is bored on size with it's mating half... any other half is not in alignment... each case is unique by a few thou
    #20