Broken bolt extraction help.

[pesty]

Hello,

A crash protector snaped off my motorbike(basicaly a big bolt)

Now the probelm is some absolute muppet tried to get it out by drilling a hole in the remaining stud and using a stud extractor/easy out.

Thing is all was going well until said muppet was distracted by an amzing amount of someone elses stupidity whilst doing said job.

And the extractor snaped I cant drill into that as its hard as nails

Any ideas?

[boosted ls1]

Well the bolt shouldn't be under tension any more. I'd see if I could soak in some WD40. Then I would try to tap it with a centre punch until I could grip it or use a chisel.

[pesty]

Thats what I thought But it is stuck Thats why the easy out snapped.

Was merrily turning away thinking the bolt was coming out while talking to someone else (which I normaly wouldnt do but they got me mad ) and the easy out snapped.

Also I cant get at it to tap it round with a punch etc. as its recest inside the frame

Basicaly Its F****D and I'm severly annoyed at my own stupiduty. Removed load of things like this at work and when I do it on my own bike I F**K it up

[deltaf]

Spark erosion perhaps?

[greenv8s]

deltaf said:

Spark erosion perhaps?

or glue it back on and sell the thing before anybody notices!

[boosted ls1]

Sure it's not a left hand thread?

[Roy_S2]

Get a T-bar type thing welded to the bit thats broken off in the stud. Hopefully that will enable you to turn it and get it out.

Roy.

[pesty]

good idea roy That is probably the only way its gonna come out.

thanks

Anyone know any welders

[grahambell]

Like Deltaf says, spark erosion is probably your best bet if you can find a local firm to do it.

Alternatively, something that worked for me in a similar situation was to use a small cylindrical grinding wheel end on and gradually grind the broken bolt and extractor away.

As this also got rid of the thread (M8) I then drilled the hole oversize, tapped it M10 or M12, screwed and Loctited a bolt in, cut and ground it flush and then drilled and tapped it M8.

[wedg1e]

You need a broken-easyout-extractor...

[PIERSY]

Similar thing happened to a cylinder head bolt years ago. Drilled it out with a very hard 'cobalt' tipped drill and retapped it oversize. Best of luck mate

[trevorpj]

Here's a method similar to Roys. Lay a nut over the sheared stud and weld through the center of the nut, welding the nut to the bolt. Not only have you a nut to swing on but the heat from the welding should help loosen up the threads.

[deltaf]

Except that you cant weld to an easyout as theyre just too brittle.

[Big Al.]

For what it's worth, the easyout is a piece of hardend tool steel! If you heat it up and let it cool down slowly you will be able to drill into it.

[nel]

Nothing like a bit of diesel for soaking in and getting things moving again. I'll grant you that WD40 penetrates faster, but diesel has much greater lubricity ooer missus.

Let the diesel soak in, then use a punch and hammer it round. If that fails then you could apply heat, but then you probably don't want to torch your frame .

Failing that it HAS to be drilled and with the sh*gged easyout you'll have to get a pillar drill onto it preferably. Can you put said bike up on a workbench?

Best of luck

Nel