Removing broken fender bolt - Team Camaro Tech
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post #1 of 28 (permalink) Old Aug 16th, 11, 08:32 PM Thread Starter
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Tom
 
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Removing broken fender bolt

When removing my front fenders, the lower bolt on the passenger side snapped at the head. What are y'all's recommendation for removing this bolt with the least amount of invasive surgery possible? Thanks!


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post #2 of 28 (permalink) Old Aug 16th, 11, 08:36 PM
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Re: Removing broken fender bolt

Weld a nut on to it.. Then while it's still hot back it out...

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post #3 of 28 (permalink) Old Aug 16th, 11, 08:48 PM
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Re: Removing broken fender bolt

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Originally Posted by Speedjester View Post
Weld a nut on to it.. Then while it's still hot back it out...
X2, The heat will loosen up the rust via expansion and will usually come out easy. If I need to heat a bolt a little longer and the area around it I use a jewelers torch.

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post #4 of 28 (permalink) Old Aug 16th, 11, 09:52 PM
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Re: Removing broken fender bolt

I've welded a nut on a time or two and it usually works pretty well. Sometimes though it's on a part you don't want to get that hot, and the left-hand drill method works well also. http://www.madelectrical.com/worksho...en-bolts.shtml
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post #5 of 28 (permalink) Old Aug 16th, 11, 10:14 PM
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Re: Removing broken fender bolt

Every Camaro fender I have taken off did the same thing. Heat is the way to go. Torch seems to do the trick on all rusted bolts.

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post #6 of 28 (permalink) Old Aug 17th, 11, 06:39 AM
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Re: Removing broken fender bolt

Same thing happened to me trying to remove bolt from door hinge. Did same thing, welded nut on and then removed. Worked like a champ.
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post #7 of 28 (permalink) Old Aug 17th, 11, 07:29 AM
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Re: Removing broken fender bolt

If welding nut doesn't work u can cut off and drill out retap afterwards. This would be last resort. I only suggest this from experience when I welded the nut on the bolt twisted and snapped. Good luck
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post #8 of 28 (permalink) Old Aug 17th, 11, 07:57 AM
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Thumbs up Re: Removing broken fender bolt

Agreed that welding a nut to the remaining stud usually works
I also try to get a candle into the thread base area while it's still hot to meld some wax into it - the wax will 'wick' into the threads and help lubricate it during removal.
I've had some success by spraying penetrating oil on them after welding also, if I can't access area to do the candle trick ...

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post #9 of 28 (permalink) Old Aug 17th, 11, 09:07 AM
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Re: Removing broken fender bolt

Been in this situation too... and crayons will work well too if you don't have spare candles. (plus you can choose the color of your choice)

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post #10 of 28 (permalink) Old Aug 17th, 11, 09:47 AM
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Re: Removing broken fender bolt

Soak threads with Kroil or PB Blaster overnight. If you have enough threads, jam 2 nuts together and back out -or- vise grips - or - screw extractor.

If no go, drill .050" under size of threads and it will loosen. Best if you have a left hand bit.
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post #11 of 28 (permalink) Old Aug 17th, 11, 09:47 AM
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Re: Removing broken fender bolt

Weld a nut onto it and the apply a good shot of Kroil. That stuff is amazing. I got mine on ebay.

Don
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post #12 of 28 (permalink) Old Aug 17th, 11, 10:13 AM
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Re: Removing broken fender bolt

God bless PB Blaster! That spray is amazing and has gotten me out of plenty of rusty jams. You have a few dependable options here to chose from. Let us know how it worked out.

Locking two thin nuts together is a great idea too. Clean, no welding or heat needed, but I would still spray it up (soak it) with PB Blaster and let it sit for a few hours. Then go back to it. Tap it a few times lightly with a hammer when spraying it. It sometimes helps distribute the PB Blaster into the threads.

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post #13 of 28 (permalink) Old Aug 17th, 11, 03:40 PM
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Re: Removing broken fender bolt

Quote:
Originally Posted by 6781camaro View Post
God bless PB Blaster! That spray is amazing and has gotten me out of plenty of rusty jams. You have a few dependable options here to chose from. Let us know how it worked out.

Locking two thin nuts together is a great idea too. Clean, no welding or heat needed, but I would still spray it up (soak it) with PB Blaster and let it sit for a few hours. Then go back to it. Tap it a few times lightly with a hammer when spraying it. It sometimes helps distribute the PB Blaster into the threads.
Google PB Blaster vs Kroil....

Don (former PB Blaster user)
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post #14 of 28 (permalink) Old Aug 17th, 11, 07:10 PM
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Re: Removing broken fender bolt

Quote:
Originally Posted by cuz13 View Post
If welding nut doesn't work u can cut off and drill out retap afterwards. This would be last resort. I only suggest this from experience when I welded the nut on the bolt twisted and snapped. Good luck
Yep, this is what I did. It just kept snapping off when I welded a nut to it. Drilled it out and tapped the hole.
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post #15 of 28 (permalink) Old Aug 17th, 11, 07:34 PM
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Re: Removing broken fender bolt

This is an old thread and there is another on the same sort of subject.
I have used the weld method for decades, never failed, not just into steel and cars, machinery cast and even Al and brass....and pipe fittings in valley covers.

Quote:
I welded the nut on the bolt twisted and snapped. Good luck
If u break the weld that means u havint the penitration required for a good weld
When u weld a new bolt on...
taper the end of the bolt 1st...sort of the same way of welding heavy plate V ing out.
With a good punch, dimple the end of the broken stud...simply giving a few good wacks helps loosen
Turn the heat way up and feed right down..chances are the settings on the welder are for panel steel or something lighter.

One of the best 'tricks' told me years ago is spend the week before dismantling an old car or anyhting like that, use some good penitration oil and each night u come home from work go around and spray all bolts studs screws etc.
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