Sheared bolt

[inkey$]

Servicing my bike today and sheared one of three bolts that hold on the oll sump plug plate (removed to access oil sump mesh)
It’s a bit too small and too difficult to access at home for reverse drill bit action, but any other ideas?

9EE6DC33-5A4A-4CCB-8306-1C654E656731.jpeg (182.75 KiB) Viewed 535 times

C3DFBD65-7864-49F5-B7BC-D85F653031D4.jpeg (109.65 KiB) Viewed 535 times

[john-e89]

Servicing my bike today and sheared one of three bolts that hold on the oll sump plug plate (removed to access oil sump mesh)
It’s a bit too small and too difficult to access at home for reverse drill bit action, but any other ideas?

9EE6DC33-5A4A-4CCB-8306-1C654E656731.jpegC3DFBD65-7864-49F5-B7BC-D85F653031D4.jpeg

You could try carefully hacksawing a groove in it and using a flat blade screwdriver Inks.

[inkey$]

Servicing my bike today and sheared one of three bolts that hold on the oll sump plug plate (removed to access oil sump mesh)
It’s a bit too small and too difficult to access at home for reverse drill bit action, but any other ideas?

9EE6DC33-5A4A-4CCB-8306-1C654E656731.jpegC3DFBD65-7864-49F5-B7BC-D85F653031D4.jpeg

You could try carefully hacksawing a groove in it and using a flat blade screwdriver Inks.

Great idea! I’ll give it a go

[Conrod]

+1 for a groove for a screwdriver. I'd suggest a small cutting disk on a Dremel. When this has happened to me in the past, I've usually found that, unless the bolt has bottomed out in the thread, the sheared part comes out really easily - so I hope that's the case with you too!

[inkey$]

+1 for a groove for a screwdriver. I'd suggest a small cutting disk on a Dremel. When this has happened to me in the past, I've usually found that, unless the bolt has bottomed out in the thread, the sheared part comes out really easily - so I hope that's the case with you too!

I’ll spark up the Dremel tomorrow and give it a go!

[Mr Tidy]

I hope that works.

If it doesn't you might want to invest in a set of screw extractors. They are just like a tap except they have a left hand thread so if you drill the stump and wind one in it should draw it out. I've had a few successes with them.

[BMWZ4MC]

I hope that works.

If it doesn't you might want to invest in a set of screw extractors. They are just like a tap except they have a left hand thread so if you drill the stump and wind one in it should draw it out. I've had a few successes with them.

I used one just the other day to get a broken screw out of a tibia

[obewan]

+1 on the methods suggested above.
I would also give it a spray with a penetrating oil, just to help things along
In the past I've had success tapping a sheared bolt out with a small centre punch.

[Smartbear]

I hope that works.

If it doesn't you might want to invest in a set of screw extractors. They are just like a tap except they have a left hand thread so if you drill the stump and wind one in it should draw it out. I've had a few successes with them.

I used one just the other day to get a broken screw out of a tibia

I hope it hadn’t gone rusty
Rob

[BMWZ4MC]

I hope that works.

If it doesn't you might want to invest in a set of screw extractors. They are just like a tap except they have a left hand thread so if you drill the stump and wind one in it should draw it out. I've had a few successes with them.

I used one just the other day to get a broken screw out of a tibia

I hope it hadn’t gone rusty
Rob

Not rusty (they’re 316L stainless steel), just overgrown with bone. The screws are self-tapping, but the threads don’t cut in reverse. If they’ve been implanted for a few years, it’s not uncommon for the heads to shear off during removal. Titanium screws and plates can cold weld to one another too, that leads to an even higher level of frustration!

[enuff_zed]

I used one just the other day to get a broken screw out of a tibia

I hope it hadn’t gone rusty
Rob

Not rusty (they’re 316L stainless steel), just overgrown with bone. The screws are self-tapping, but the threads don’t cut in reverse. If they’ve been implanted for a few years, it’s not uncommon for the heads to shear off during removal. Titanium screws and plates can cold weld to one another too, that leads to an even higher level of frustration!

I guess if you messed up that job you wouldn't have a leg to stand on?

[BMWZ4MC]

That’s ok, I prefer to be legless when operating

[ronk]

Snap-On did a bolt extractor system - A splined shaft driven into a hole drilled into the bolt, then a hex adaptor slide over the shaft.
No doubt expensive - I was fortunate to be able to borrow a set when I needed them.