Easy out slips
#7
If the ezy out breaks you can ram it out from the back side,Then step up in size.If it i totally fubard take it to a machine shop and have them remove,Cheeper than a new Fly wheel.What we would do is1. fixture the wheel where it will not move 2.Pick up the true center of the hole not the bolt3.Step drill until the only thing left is the threads of the bolt wound up like a spring in the hole 4. pull out like a Heli-coil w/ pliers5. chase the threads to clean out the remnants.Machinists remove more broken bolts than almost any other Workorder it seems
-G-
-G-
#9
Alright, I managed to get it out by upsizing to the next bigger easy out, giving it a good tap and then turning as hard as I could...
Then it snapped. While turning. I don't really have much upper arm strength, what are these things made out of, glass?
Luckily, I was able to turn the rest of the bolt with a big plier! Yay! Now just to reattach the clutch and put in the transmission...
Thanks everyone!
Then it snapped. While turning. I don't really have much upper arm strength, what are these things made out of, glass?
Luckily, I was able to turn the rest of the bolt with a big plier! Yay! Now just to reattach the clutch and put in the transmission...
Thanks everyone!
#10
Cpt. Slow
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Originally Posted by Nagase
I managed to get it out by upsizing to the next bigger easy out
No they're not made of glass, just very hard, and therefore brittle, metal. I believe they're a cheap form of carbide. That's why it sucks to break one off, because the highest us machinists can generally go is carbide, and since the easy out is already carbide, we can't drill through it, so the only option is an EDM machine. It's what I use for broken taps as well. Idiotic engineers keep designing new parts with a 2" blind threaded hole.
Last edited by curly; 11-18-2009 at 07:43 PM.
#11
Alright, I managed to get it out by upsizing to the next bigger easy out, giving it a good tap and then turning as hard as I could...
Then it snapped. While turning. I don't really have much upper arm strength, what are these things made out of, glass?
Luckily, I was able to turn the rest of the bolt with a big plier! Yay! Now just to reattach the clutch and put in the transmission...
Thanks everyone!
Then it snapped. While turning. I don't really have much upper arm strength, what are these things made out of, glass?
Luckily, I was able to turn the rest of the bolt with a big plier! Yay! Now just to reattach the clutch and put in the transmission...
Thanks everyone!
G-
#17
Cpt. Slow
iTrader: (25)
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 14,360
Total Cats: 1,184
A blind hole doesn't go through the part. Because of this, you need to use a spiral flute tap, so the chips from cutting the threads are moved upwards out of the hole, instead of bunching up below the tap. These spiral fluted taps are notoriously weak and easy to snap.
As Reverend Greg said, torquing a bolt is stretching it towards the end of its elastic range, so the 'springiness' of the bolt keeps it from backing out. Tightening it past this will pull the bolt into it's plastic range, at which point it will not spring back to it's original length. You will also risk pushing it past it's ultimate strength, which is when it begins to neck down, and shortly after it will reach it's yield point and snap. I may have ultimate/yield point definitions backwards though.
As Reverend Greg said, torquing a bolt is stretching it towards the end of its elastic range, so the 'springiness' of the bolt keeps it from backing out. Tightening it past this will pull the bolt into it's plastic range, at which point it will not spring back to it's original length. You will also risk pushing it past it's ultimate strength, which is when it begins to neck down, and shortly after it will reach it's yield point and snap. I may have ultimate/yield point definitions backwards though.