Stainless brake line nightmare - Steve Saunders Goldwing Forums

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post #1 of 45 (permalink) Old 09-25-2016, 01:36 AM Thread Starter
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Stainless brake line nightmare

Tired of the perpetually mushy brake lever I picked up a stainless steel line set on ebay. Getting it in place without taking off the fairing was a doozy. And now it leaks. Problem is, I don't really understand how it can not leak. The problem lies where the line from the master cylinder goes into that metal piece that goes across the forks. No matter how hard I tighten it (pretty sure I shouldn't have to he-man it, too, that's a 10mm nut and I almost rounded everything at this point) it leaks.

The metal line end looks like this:



The original line has this little hump inside that fits the flared opening, I can see how it seals it up.



The new line just has a sort of metal funnel arrangement.



Am I missing some kind of internal piece? How is all of this supposed to work? Very confused, spent most of the day on this with nothing to show for it.
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post #2 of 45 (permalink) Old 09-25-2016, 01:50 AM Thread Starter
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Googling around shows that there are little conical copper washers I can get that that will let the flare mate a little easier. Maybe I can find them locally somewhere...
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post #3 of 45 (permalink) Old 09-25-2016, 01:54 AM
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As you suspect it will not work.
Where did you get the lines and are all the flare fittings like that?

Advise given here is free and comes with no warranty "Caveat emptor"

Ken.
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post #4 of 45 (permalink) Old 09-25-2016, 02:49 AM Thread Starter
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On ebay, from a 1200 that was being parted out. I haven't checked the other fitting yet, it's still connected - and doesn't seem to leak.

I'm starting to suspect the threads on the center piece, it won't screw in cleanly into my old lines either. I still have my original center piece I can swap in, but don't want to ruin it if there is no chance it will work. I guess I need to do some more research on this.
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post #5 of 45 (permalink) Old 09-25-2016, 03:09 AM
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The problem is, you don't have the correct style of line fittings.

We have a forum member who provides the exact SS lines at near cost to forum members. And I can't recall anyone saying they had a leak.

GO to the For Sale forum and in the Stickys under the username LOPEHA find the SS thread , add a post there. Andy will answer you right away.
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Last edited by AZgl1800; 09-27-2016 at 05:46 PM.
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post #6 of 45 (permalink) Old 09-25-2016, 04:21 AM Thread Starter
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The thing that weirds me out is that the fitting that was screwed in when it got here seems fine, no leaks. I'm assuming that both are the same. Somehow the previous owner made it work.

I'm really starting to think that the threads on that middle piece were the problem. My original cross piece threads into the new line cleanly with just my fingers, before hitting a well defined stop - I feel like if I got some flare wrenches and did the "loosen and tighten a few times" trick I've read about it will seal. The one that came with the new lines didn't do that, and I didn't think to double check - it was probably already cross-threaded a little and then I cranked on it some more.

I'll try again tomorrow with the right tools, and if it just won't work I guess I'll order a new line from a trusted source.
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post #7 of 45 (permalink) Old 09-25-2016, 05:37 AM
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Quote:
Originally Posted by eskachig View Post

I'm really starting to think that the threads on that middle piece were the problem. My original cross piece threads into the new line cleanly with just my fingers, before hitting a well defined stop - I feel like if I got some flare wrenches and did the "loosen and tighten a few times" trick I've read about it will seal. The one that came with the new lines didn't do that, and I didn't think to double check - it was probably already cross-threaded a little and then I cranked on it some more.
It is just plain and simple the wrong type of fitting, tightening it more won't fix that.

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post #8 of 45 (permalink) Old 09-25-2016, 06:39 AM Thread Starter
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Well that does seem to be the consensus here, hmm.

What is the correct type of fitting called and what does it look like? And why is it that only one of the lines leaks?
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post #9 of 45 (permalink) Old 09-25-2016, 10:16 AM
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The threads are NOT the sealing surface.

it is that raised area in the center of the connector, the "flare" that seals the line.

the threads only serve to keep that flared fitting securely together.

you must replace the lines altogether.
either with the SS lines I referred to above, or OEM lines.

the SS lines from Lopeha are the best choice.

~ John


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post #10 of 45 (permalink) Old 09-25-2016, 10:42 AM
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Somehow the previous owner made it work.

You don't know that. His could have leaked, or he might have had something modified.

Why ain't we ridin'?
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