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Ford 9N, 2N & 8N Discussion Forum
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repairing a bolt hole

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hvw

08-29-2004 08:52:06




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The tapped hole that holds the top of the footrest bracket to the inspection plate cover on my 8N has wallowed out. The bolt will get a little snug but spin if you put any pressure on it. Any ideas on a way to repair it without retapping for a larger size bolt?

By the way, taking off the inspection cover revealed why my brakes drums are coated in oil. I had probably 7 gallons of fluid and water in there. Always an adventure.

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souNdguy

08-29-2004 11:48:25




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 Re: repairing a bolt hole in reply to hvw, 08-29-2004 08:52:06  
Another option is to find a nut and longer bolt.. put it thru and nut it from the rear.. perhaps a locknut to keep it from vibrating loose.

As long as that is the only hole repaired that way you can remove the other bolts, and then slide the cover around to get at the nut for removal.

Tapped for a new size seems like the best bet.. that or the heli-coil..

Soundguy



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Rob

08-29-2004 11:34:05




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 Loctite thread repair in reply to hvw, 08-29-2004 08:52:06  
Loctite makes a $9 "Stripped Thread Repair" kit. Mix some goop, put it in there, coat the fitting with a release agent, thread it in, let set for 5-minutes, back out the fitting and let it all sit for a bit. Presto! New threads. The threads aren't 100% as strong as new metal and but will do in that situation. You wouldn't use it on a headbolt but one of the bolts holding the oil pump on my tbird is threaded into that stuff. I've used it on the bolt holding the king pin in a tractor also. Works pretty good.
I've used that same kit at least twice and there's plenty more left over.

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Dan

08-29-2004 19:44:08




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 Re: Loctite thread repair in reply to Rob, 08-29-2004 11:34:05  
I tried this on my partialy stripped crankshaft bolt hole. I don't know if it was an old kit, but the release agent did not release as claimed. I mixed the goop together, stuffed it in the hole, coated the crank bolt real well with the releasing agent, and screwed the bolt into the crank shaft. Waited five minutes and tried to back it out - guess what, it was stuck like chuck. I had to use a 4 foot cheater bar to get the bolt back out so I could clean the dried goop back out of the crank shaft hole. Should have put the heli-coil in the first place like I thought... Just my experience for what it is worth.

Good luck,
Dan

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Dell (WA)

08-29-2004 09:07:35




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 Re: repairing a bolt hole in reply to hvw, 08-29-2004 08:52:06  
hvw..... ....gitta "oversized bolt". Itzza 7/16-14 x 3/4 bolt, try to find a "galvanized bolt" of that size, the galvanized coating sometimes makes the bolt justabitt oversize.

Me? I wouldn't muckka'round and just re-tap the wallered out hole for 1/2-13 thread.

Theres always thread locking puckey..... ...Dell



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SteveB(wi)

08-29-2004 09:04:32




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 Re: repairing a bolt hole in reply to hvw, 08-29-2004 08:52:06  
You can try stuffing some steel wool in the hole or wrapped around the bolt.



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Bob

08-29-2004 08:58:19




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 Re: repairing a bolt hole in reply to hvw, 08-29-2004 08:52:06  
If the casting just has stripped threads, and there is not a big chunk ripped out, it should be easy to repair with a threaded insert ot a Heli-Coil.



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Joe (IN)

08-29-2004 09:14:51




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 Re: repairing a bolt hole in reply to Bob, 08-29-2004 08:58:19  
Ditto. Fix it once and fix it forever. The new stainless thread insert will be a permanent, seamless repair. Your bolts would all still be the same size this way, too. It would be a piece of cake to do in that location as well.



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