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Old 09-29-2015, 10:17 PM   #15
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Originally Posted by TQ60 View Post
KUse a thread file.

Granger and most industrial supplies have them.

They are a square file with rows of cutters spaced at standard thread spacing and they come in metric too.

About 12 to 17 bucks and you only use them one time in many years but oh - boy they save your butt when you need one.

They are not one time use...Have had ours for years and needed one last week to clean up a special fitting type "N" rv connector that was part of a special kit that had plating added that made it not fit.

No handy die for the size (about 9/16 X 24 tpi) but the file fixed it right up.

Diameter does not matter just the thread pitch.

Clean up threads then use oil and air to clean out female side or if in new part then Teflon tape
Like this set?
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Old 09-29-2015, 10:23 PM   #16
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Originally Posted by twinboat View Post
See if a large SAE nut will fit. That will give you a die size, to try cleaning up the threads.
That's the first thing I tried at Home Depot, checking it on bolt/nut sizer. Then I looked at air fittings and all they had were large ones, then I check pipe fittings and still no luck.

Oh well, new ones are on order.
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Old 09-29-2015, 10:26 PM   #17
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Originally Posted by mellottracin View Post
Try Napa Or Lowe's.
Napa has them online only and a little cheaper than Amazon. But they would not let me chose shipping or even tell me what shipping it was or how long it would take. So I went to Amazon. Probably in hindsight, I could have had Napa order it faster and cheaper.
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Old 09-30-2015, 08:30 AM   #18
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Yes that file set will do the trick.

If your pitch is 24 tpi there is a file with it.

Good to go.
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Old 09-30-2015, 09:39 AM   #19
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It might say that, but the other side took the compression cap. The tech at the hydraulic store was surprised.
Take a closer look. The threads might be the same on both ends, but what makes it a compression fitting is that the inside diameter is tapered. This causes the ferule to compress as it is forced into the fitting.

I am only going by the picture, but it seems to look like both ends are exactly the same on the inside. I wonder why they only give you one ferule and cap

Does one end of this screw directly into the air horn?
If so, how does it seal (rubber washer??)?

Overall, for $20, this is cheap if you can fix it yourself rather than paying someone more on top of that...

Dan
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Old 09-30-2015, 11:28 AM   #20
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Take a closer look. The threads might be the same on both ends, but what makes it a compression fitting is that the inside diameter is tapered. This causes the ferule to compress as it is forced into the fitting.

I am only going by the picture, but it seems to look like both ends are exactly the same on the inside. I wonder why they only give you one ferule and cap

Does one end of this screw directly into the air horn?
If so, how does it seal (rubber washer??)?

Overall, for $20, this is cheap if you can fix it yourself rather than paying someone more on top of that...

Dan
Then let me rephrase what I said, it is the same thread as the compression fitting side. Yes, the long side screws directly into the bottom of the horn.

I was only trying to find the size of the long end so I could repair it with a die, but nothing matched at the hardware store. So I went to the hydraulic shop hoping they could get me the size for a die or if they had something specific to repair it.

Well the fix is a new elbow, I got two so they will both be new. I also have two new Hadley Horns going up.

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I have been concerned about how these seal, and I was wondering if a sealant was used - notice the gray on both elbows. Though I think that is just tarnish.

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I looked into the horns inlet, and it looks like some form of seal at the base. These shots are of the old and new horn.

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Old 09-30-2015, 12:58 PM   #21
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The only back pressure is the restrictor, up inside the threads, shown In the picture.

The air blows out the front, while moving a diaphram.
I don't think sealant is too important in that connection.

A little pipe dope would be fine.
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Old 09-30-2015, 08:27 PM   #22
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Well then Mike, should we assume that after you fix it you will be tooting your own horn

Just could not pass that one up....

Dan
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