Righty loosey on a 10mm bolt...

[Soft Cars]

This is what I'd do:
1. Remove plate
2. File broken bolt flat with jewelers file (if enough material is protruding above the surface)
3. Center punch center of broken bolt
4. Get Proto extractor (the tapered square kind)
5. Drill pilot hole with the size drill printed on the extractor
6. Tap extractor in with hammer to get it wedged in
7. Turn extractor and bolt out with 8-point socket

One added tip:
I always start with the next size drill smaller than the size printed on the extractor.

 

[The Critic]

Honestly if you just took the whole thing to a real machine shop they'd probably have it out in 15 min, with most of that time spent devising a way to hold it on a mill table/in a mill vise

There, I fixed it for you.

Good luck finding one of those nowadays. I sent a cyl head to a machine shop with a broken plug. I ended up having to order a timesert kit for them and even then, it took a week for them to figure out how to do it.

 

[D60]

There, I fixed it for you.

Good luck finding one of those nowadays. I sent a cyl head to a machine shop with a broken plug. I ended up having to order a timesert kit for them and even then, it took a week for them to figure out how to do it.

The program I went thru circa '07 shut down a few years later. No enrollment. Machining isn't "sexy". Kids want welding or automotive. But overall, we're just not teaching the trades anymore. I'm off to go shake my fist at some clouds now....

 

[eljefino]

Now you have a centering jig to set in the plate and guide your pilot hole. Once you've got a start you can keep stepping up with LH bits, just don't exceed the minor dia of the threads.

When you do this, despite your best efforts, you'll go off center and start chewing threads. Not to worry! This is when the bit will catch what's left of the fastener and it'll all come out.

You might think you chowdered the hole, but vacuum it, run a pick, then run a tap through, carefully, and you'll have enough meat for a replacement. Might be best to find a stud threaded all the way down and put a nut on top.

 

[kschachn]

I have an easy out set a friend lent me, but I don't have bits strong enough to drill a starting hole.

Have you pulled off that plate to see how much of the bolt is still remaining below the plate and above the pump housing? If you haven’t then do it.

If there is enough to grab with a vise grips, then heat up the exposed stud and turn it out of there.

 

[ironman_gq]

Remove the plate
Dremel with small carbide ball burr
put a divot in the center with burr
slowly drill out with a left hand bit

 

[lube_n00b]

Got the screw out with a left hand bit and an easy out. Had to chase threads and clean it all up. Didn't remove plate during that process because I didn't want metal shavings getting into the relief valve. Bought 3 new bolts from dealer, threw the spring back in, sealed it all back up.

Funny story, I took it to a shop and asked how much they'd charge to pull it out. They said anywhere from 68 - 110. So I went and spent 40 bucks on tools and did it myself in less than 30 mins instead.

 

[KrisZ]

I would use the plate to find the true center and use this type of punch to mark it. These are used to lightly mark the spot and a normal center punch has to be used afterwards. Otherwise the center finding punches will be quickly ruined. I would drill a small hole and try to use an easy out.

 

[ls1mike]

Yes it is. But below the level of the pump housing?

Yep, the bolt that was broken off in the Malibu was below the exhaust manifold flange. My kid just MIG welded in the middle of the nut to the broken bolt and built it up slowly came right out. I am sure the heat helped. It worked so good unless absolutely necessary I will never drill a broken fastener or use an easy out ever again.

 

[D60]

Got the screw out with a left hand bit and an easy out. Had to chase threads and clean it all up. Didn't remove plate during that process because I didn't want metal shavings getting into the relief valve. Bought 3 new bolts from dealer, threw the spring back in, sealed it all back up.

Funny story, I took it to a shop and asked how much they'd charge to pull it out. They said anywhere from 68 - 110. So I went and spent 40 bucks on tools and did it myself in less than 30 mins instead.

There ya go! Give a man a fish, he'll eat today. But teach him to fish.....

 

[4WD]

There ya go! Give a man a fish, he'll eat today. But teach him to fish.....

And some days he’ll only catch a sunset - then hit the harbor cafe for a seafood platter …

 

[dumkid]

The program I went thru circa '07 shut down a few years later. No enrollment. Machining isn't "sexy". Kids want welding or automotive. But overall, we're just not teaching the trades anymore. I'm off to go shake my fist at some clouds now....

i want to learn how to machine stuff, looked for a job/apprenticeship. apparently most machining is done by computer and so instead of old school machinists you have CNC machine CAD engineers and they just draw stuff on computers and the machine does the rest. i wanna play with lathes and stuff not sit on my butt all day

 

[dumkid]

i already know welding and automotive stuff