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Old June 24th, 2008, 09:41 AM   #1
howell_jeep
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Default I'm screwed...broken bolt Q

I'm replacing rear struts on my Sable and I broke off a bolt that holds it to the spindle.

What do I do now? Just drill it out and tap it? Or take the whole thing off and take it to a shop to have the bolt removed?

Now i'm scared to touch the other side, it's just as stubborn.
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Old June 24th, 2008, 09:43 AM   #2
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You mean you broke the nut off? Off the knuckle? I know GM cars have splined holes and bolts. If the nut broke off, or the head, can't you just use a punch and knock it through?
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Old June 24th, 2008, 09:45 AM   #3
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You mean you broke the nut off? Off the knuckle? I know GM cars have splined holes and bolts. If the nut broke off, or the head, can't you just use a punch and knock it through?
Yes, I twisted the head of the bolt off and part of the bolt. I haven't tried punch, there is not much room in there.
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Old June 24th, 2008, 10:28 AM   #4
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Yes, I twisted the head of the bolt off and part of the bolt. I haven't tried punch, there is not much room in there.
If you can, I would just try punching it out. Then put in a new grade 8 bolt to replace it since the dealership won't have those in stock most likely.

Does the bolt have a nut on it or are the threads inside the knuckle? I guess I am used to the GM style of strut mounting where it has a bolt and nut.
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Old June 24th, 2008, 10:35 AM   #5
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The thread is in the knuckle, do you think I still would be able to punch it out?

If I do get it out, can I just used a bolt with a nut instead of taping a new thread?
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Old June 24th, 2008, 10:38 AM   #6
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The thread is in the knuckle, do you think I still would be able to punch it out?

If I do get it out, can I just used a bolt with a nut instead of taping a new thread?
Negative on punching it out if the threads are in the knuckle. You will have to drill it out or try to use an easy out, which in my experience is almost never easy and rarely gets them out.
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Old June 24th, 2008, 10:50 AM   #7
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i had that happen once to me on my explorer,

i just drilled a hole and tapped it,

worked like a charm.
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Old June 24th, 2008, 11:03 AM   #8
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i had that happen once to me on my explorer,

i just drilled a hole and tapped it,

worked like a charm.
do you think i can get away with using bolt and nut instead of tapping it?
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Old June 24th, 2008, 11:08 AM   #9
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Drill it out and use a nut and bolt. Ive seen it done.
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Old June 24th, 2008, 11:51 AM   #10
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use a left hand twist drill and drill it out. don't go bigger than the core diameter of the bolt though, usually more often than not the bolt backs out with the drill once enough of the bolt is cut away. get a heli coil just in case though.
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Old June 27th, 2008, 11:42 PM   #11
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Shorter distance to drill with regular drill bit. He broke it off inside the threads. Most of it is already out the backside.
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Old June 28th, 2008, 12:19 AM   #12
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you can drill it put and bolt and nut it if needed it will get you by
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