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"Buggered" inverted flare nut on brake line

Old 06-22-2006, 10:08 PM
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66since71
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Default "Buggered" inverted flare nut on brake line

Right front on my 66. Replacing brake hoses. The inverted flare nut was previously damaged, this time requiring vise grips, as the flare wrench no longer fits.

Has anyone had any luck, cutting the flare off close, straightening the tube, installing a new nut and reflaring the end (double flare of course)? Seems like there is enough tubing to do it, just don't know what I'll face straightening the tube an making the flaring tool fit.

Also, aren't brake lines a different flare angle than plumbing? One is 45 degree the other (brake lines) is 37 as I recall. Is this right?

Harry
Old 06-22-2006, 10:22 PM
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67L36Driver
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Nope, inverted flare is 45*. You may be thinking of the 37* JIC hydraulic (oil not brake fluid) system.

Your natural gas and water lines in your house use standard 45* flare.
Old 06-23-2006, 12:08 AM
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tracdogg2
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TBW (steel) brake lines are 45 deg. Stainless steel lines are 37 deg.
Mike
Old 06-23-2006, 04:00 AM
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ghostrider20
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I had the same problem a few years ago. Had a brake hose take a crap on the left side, and of course in good form, went to replace the right hose as well. The nut would not budge, and when it did, it twisted the line, and fractured it.

The line is very strong, and just trying to bend it up to get a flare tool in there was a pain.

I just ordered a new line, and installed it. It was an AZZ pain, as it is routed from the junction block, arond the front cradle, up the side of the frame and out to the wheel.

Doing this with the radiation and shroud in place required patients, and some tweeking.

Mark
Old 06-24-2006, 10:22 AM
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66since71
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Thanks everyone for the replies. I was able to get enough of the line straightened to get both the nut and the double flaring tool on it. I have not yet cut it and flared it (I'll have to make the cut with a dremel tool, as there is no space for a tubing cutter). Though I'd practice on a few generic replacement lines before trying to cut and flare this one. I'ts a one shot deal right now. I'll let you know in a few days how it went.

Harry,
Old 06-24-2006, 12:15 PM
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Double Venom
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P.S.
37' flares are normally foreign used. Try to come up with that toolfrom a neighbor!
Old 06-24-2006, 02:20 PM
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JohnZ
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AN fittings are 37* - I have Imperial Eastman flaring tools for both 37* (AN) and 45* (SAE) fittings.
Old 06-24-2006, 07:41 PM
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CoupeKeeper
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You can "rent" a flaring kit from Autozone. You give them the price of the kit, when you return it they give you your money back. What a deal.

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