[Shop-talk] sheared bolts...I hate 'em

[Gerald Brazil]

Traci there are three rules" 1)patience 2)patience 3)patience....

OK so here is what to do: A) get yourself a good sharp center punch. Get it
as close to the center as you can and give it a real healthy smack with a
big hammer. You only get one chance on this so get it in the center and make
it a good dimple. B)LW is OK, but if you want the best, find Kroil. C) Is
this a spot where you can apply heat? If so heat it. It works best if you
can use a small welding tip on an ox/act torch. Best to direct the flame on
the broken stud. D) When it has cooled naturally, apply the Kroil and let it
soak for a few hours. E) Repeat this sequence 7 times (seven is a lucky
number) F) Now try the left handed drill. I start with a small drill and
work to the largest I can get in w/o getting into the threads. G) If you
weren't lucky it is now time to try the Easy Out (talk about an oxymoron!)
Be sure you select an Easy Out that is large enough in diameter that it
won't hit the bottom of the hole when you smack it sharply with a big
hammer. Now try backing it out. If the EO starts to twist and the broken
stud doesn't, stop! You don't want to snap that because that is when thing
really turn bad. Go back to B and C and repeat.

If this doesn't work you may just have to keep increasing drill size until
you have drilled the threads out and go buy a Helicoil....now that's another
story.


-----Original Message-----
From: shop-talk-bounces+gerrybraz=cablespeed.com at autox.team.net
[mailto:shop-talk-bounces+gerrybraz=cablespeed.com at autox.team.net] On Behalf
Of Traci Pearson
Sent: Wednesday, May 21, 2008 6:41 PM
To: shop-talk at autox.team.net
Subject: [Shop-talk] sheared bolts...I hate 'em


I've had my share of sheared bolts on 510s, and
in the past I always had someone else extract
them for me. But I want to learn to do it on myself.

This is a short 10 mm bolt that I know I didn't
really torque down, but age and vibration and
heat... Anyway, how can I get ahold of and back
out the bolt part that's left inside? The bolt
sheared below the lip of the hole, so there's
nothing sticking out to grab on to.

I figured I'd start with some Liquid Wrench, but
what's the best way to proceed from there? It's
in an awkward place; I don't know if I could get
a drill bit (or attachment) straight onto it. Maybe my Dremel?

What about those kits such as a GrabIt?

Any ideas/techniques/advice are greatly appreciated!
Thanks!


Traci Pearson
Pearson Technical Communication
Writing, Editing, Information Design  Print and Online
pearsontechcomm at comcast.net
(303) 410-9101

When something can be read without great effort,
great effort went into its writing.
         ~ Enrique Jardiel Poncela
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