Leaking compression fitting driving me nuts!

[Moparfiend]

You sure about that being a 45* degree flare? The box fitting is AN, which is 37*, and so the corresponding flare should also be 37*.


Disregard. They are a double flare.

Ok now a bit confused here does a double flare mean 45 degrees?

 

[HawkRod]

Ok now a bit confused here does a double flare mean 45 degrees?

Double flare means the pipe is first flared out and then flared back in on itself - hence the double flare. I'm probably describing it poorly but that is the basic idea.

The angle that the pipe is double flared is another matter. Most "old" flares like brake lines are flared using a 45 degree angle. Fuel injection and other flares are done at 37 degrees. Don't ask me about the advantage of one over another - I don't know. But they are different and don't work together.

 

[tonysrt]

There probably different so you can't mismatch them.

 

[Moparfiend]

Ok so I rented a double flare kit from AZ but after inspection of the flare I think it is OK. I am now not convinced that the leak was at the flared union but possibly the steering gearbox AND the associated flare connector. I removed it (with my crowsfoot flare nut socket) and it was beat up. So I went to get one which after Nappa not having one I found this one. As can be seen it has an O-Ring where the one I removed didn’t. I am not sure what the original one looks like but now that its reassembled I am hoping it is finally sealed. I will post when I can test it.

 

[5.7 hemi]

A copper crush washer goes between the fitting and the box. That is what makes the seal. Also, that fitting looks like a 37* flare, that won’t seal to a 45* sealing surface. Get a copper crush washer and reuse the original fitting.

 

[dadsbee]

Yep.. my post #3 fell on deaf ears...

 

[Moparfiend]

Yep.. my post #3 fell on deaf ears...

A copper crush washer goes between the fitting and the box. That is what makes the seal. Also, that fitting looks like a 37* flare, that won’t seal to a 45* sealing surface. Get a copper crush washer and reuse the original fitting.

Wow really they both look like the same angle to me. So the copper crush washer fits at the shoulder of the fitting right?

 

[Moparfiend]

Yep.. my post #3 fell on deaf ears...

What?

 

[dadsbee]

Post #3, I advised your box fitting should have a crush washer between it and the box because it's straight thread. And you've now confirmed there wasn't one there. That'll be your leak.

5.7 is pointing out that your new fitting is a "JIC" fitting with a 37* flare and it's not going to seal to that lines 45* flare. Get a crush washer and put the old fitting back in.

 

[5.7 hemi]

Exactly!^^^^^

 

[kiwigtx]

Hi OK well I put a new PS Pump in and a new line.

Where did the new line come from?....I presume you mean hydraulic hose.

You may have bought a cheapie which is not manufactured close enough to the factory tolerances.

 

[kiwigtx]

5.7 is pointing out that your new fitting is a "JIC" fitting with a 37* flare and it's not going to seal to that lines 45* flare. Get a crush washer and put the old fitting back in.

...the difference of 8 degrees is not really indistinguishable to the untrained eye on a fitting that size.

 

[Moparfiend]

Thanks guys for the help. Does anyone know where I can get a new fitting with the correct crush washer?

 

[Moparfiend]

This is strange I tried looking up Mopar steering box parts and found Jims Mopar Parts who specializes in in this look what he has advertised. Not saying its right but its the same part I bought....

 

[gdrill]

I agree you just need the washer. I just changed my power valve the other day and there is a copper washer that seals the fitting to the body

 

[5.7 hemi]

Just get a copper crush washer, tighten fitting, install pressure line, bleed air out of system, enjoy. It’s really that simple.

Those “o” rings don’t last.

 

[Moparfiend]

Just get a copper crush washer, tighten fitting, install pressure line, bleed air out of system, enjoy. It’s really that simple.

Those “o” rings don’t last.

Ok I am concerned about not getting the correct crush washer. I assume it crushed as the fitting bottoms out at the pump. Correct? So any one that fists over the the threads should work?

 

[dadsbee]

...the difference of 8 degrees is not really indistinguishable to the untrained eye on a fitting that size.

I have a few around Roger... I can see the difference a mile away.. Especially on this -32 (2" diamter)

 

[Moparfiend]

After thinking about this more I think it should be the top shoulder being the crush point.

 

[5.7 hemi]

Yes, just hit your local parts store and get one that fits. Tighten it, your done.