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Hey all just had the pleasue of cutting out my alternator in my 84 Bronco. And to my suprise when removed the bolt it it was screwed into a larger bolt/thingamajig that I cant get off. Went to a couple part stores to see if they had another one or knew what it was called so I could oreder it with no luck. Any of yall know what the bolt attachemt is called or have clever ideas of how to remove it?

Thanks!
 

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1981 Bronco, 4.9L, ZF5, NP208, Detroit Truetracs, 3.55 gears, 31" Wranglers front and rear
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2,142 Posts
That's a threaded insert. Do you need it for the new alternator? Might be easier just to get another bolt.

You could try locking 2 nuts together on the insert, hold the bolt in a vise, heat the insert up with a plumber's torch, then use a wrench on the locked-together nuts and turn it off. Unless it's rusted really bad that should get it off.
 

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The Tennessee Warden
96 XL, built 357W, E4OD, BW1356, 4.56 gears
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4,931 Posts
Hey all just had the pleasue of cutting out my alternator in my 84 Bronco. And to my suprise when removed the bolt it it was screwed into a larger bolt/thingamajig that I cant get off. Went to a couple part stores to see if they had another one or knew what it was called so I could oreder it with no luck. Any of yall know what the bolt attachemt is called or have clever ideas of how to remove it?

Thanks!
Yes, that is a head plug - it blocks off the narrow channel in the heads that leads to the AIR crossover pipe on the back of the engine (if equipped). Use two nuts, as @SRWillis mentioned, on the plug and then wrench 'lefty-loosey" on the one nearest the long bolt. It'll come off. Then screw that plug back into the head.

These are what you see there:
 
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