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Old 07-07-2009, 05:27 AM
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Brake line flaring?

I'm trying to flare the brake line in my car. The line doesn't want to stay tight in the flaring bar, it just slowly slides out. It seems to be tight as possible. I just cannot figure this out for the life of me. This is the only peice holding my car from driving.

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Old 07-07-2009, 07:18 AM
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Quote:
Originally Posted by TheBigDeal
I'm trying to flare the brake line in my car. The line doesn't want to stay tight in the flaring bar, it just slowly slides out. It seems to be tight as possible. I just cannot figure this out for the life of me. This is the only peice holding my car from driving.
It sounds like the flaring tool has worn out "teeth" or knurled ridges (almost looks like the ID of the clamping bar is threaded) that do the gripping of the tubing. Try clamping the tubing in from the opposite side- this might get you better teeth to hold the tubing.

A couple tips:
Be sure to cut the ends squarely, deburr the ID as well as dress the OD and square the tubing if needed w/a file.

Best always to use a double flare.

Don't forget to put the fitting on the tubing first, before flaring.
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Old 07-07-2009, 09:33 AM
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thanks.

I think the only problem would be the cutting the end square because i can flare brake line no problem outside of the car
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Old 07-07-2009, 09:37 AM
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That is a common problem with low quality flaring tools. They work fine with copper, but when trying to flare steel lines they cannot offer enough resistance to keep the tube clamped properly. Try placing the clamping part of the flaring tool in a vise once you get the line situated. That has worked for me in the past until I purchased a quality flaring tool.

Vince
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Old 07-07-2009, 10:50 AM
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Autozone will let you borrow one for free..I did last week and it worked well..dont buy a new one for one piece
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Old 07-07-2009, 11:46 AM
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Quote:
Originally Posted by TheBigDeal
I'm trying to flare the brake line in my car. The line doesn't want to stay tight in the flaring bar, it just slowly slides out. It seems to be tight as possible. I just cannot figure this out for the life of me. This is the only peice holding my car from driving.


Quote:
Originally Posted by TheBigDeal
I think the only problem would be the cutting the end square because i can flare brake line no problem outside of the car
From what I'm reading here (coupled with a location that reads "Canada"), it sounds to me like you are trying to double flare an existing hard line that is likely slightly smaller thanks to a bit of surface deterioration. I did the brake lines a couple months back on a '92 Buick wagon that was like that. I wound up cutting the line back even farther to find a spot of line that hadn't been "reduced" in diameter.

In a while, Chet.
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Old 07-07-2009, 09:04 PM
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I've had this problem too, I use an extension on the clamp handle and make it so tight somtimes I don.t think I will get it off. Also I tighten the other end with and that looks like a wing nut with an big adjustable. I have to put the clamp in a vise to do this.
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Old 07-08-2009, 12:18 AM
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Quote:
Originally Posted by TheBigDeal
I'm trying to flare the brake line in my car. The line doesn't want to stay tight in the flaring bar, it just slowly slides out. It seems to be tight as possible. I just cannot figure this out for the life of me. This is the only peice holding my car from driving.

Look up a Ridgid 345-DL. Comes with case, cutter, 3/16 thru 1/2 double lap mandrels, and what you see below. I've double flared SS brake line with mine. Around $80 and worth every penny.
.
.
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Old 07-08-2009, 01:35 AM
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Quote:
Originally Posted by C-10
and what you see below.
Is the one shown, in metric (marked 16, 15, 14...)?

What is the piece cropped in the image below? Thanks.
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Old 07-08-2009, 11:05 AM
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Ridgid offers a metric version you see (pic from their site) as well as a fractional version.

The cropped pic shown is the hinge that keeps the two halves of the flare block together.
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Old 07-08-2009, 09:23 PM
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I have used (and still own) the multi-piece flaring tools. One time using the one shown made me reconsider. It's a Papco 17565.

Unfortunately the linked photo isn't very good. The couple I took shows a bit more detail. The images don't show the mechanics of it very well, but it has a simple cam-action that clamps the tubing into the tool, the "die" swings over and locates onto the stud that is slotted to receive it.

Different sized tubing is received by holes located on rotating, indexed tooling. The "mandrels" (for double flaring) are separate. Super fast and easy to set up.

At $75.00 give or take, it's not a cheap tool, but competitively priced for a "good" tool, I believe.
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Old 07-09-2009, 06:54 AM
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well I used rigid from work and many differant ones with the same problem. What I finally did and it worked for all my brake lines is to set it all up tighten as best as possible and then I put the housing in a vice and that extra presure on the tube worked everytime even with the hf cheapo double flare tool. worked for me Ed
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Old 07-09-2009, 03:58 PM
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I cannot put it in vice, I'm trying to do this when the brake line is in the car
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Old 07-09-2009, 04:10 PM
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Quote:
Originally Posted by TheBigDeal
I cannot put it in vice, I'm trying to do this when the brake line is in the car
Use a pair or two of large vice grips- same effect.

If you have the time and inclination, take a flat piece of glass, put a piece of WD40 wetted 220 grit emery paper down on it and surface both halves of the bar assembly that clamps the tubing. If you take .010"-.015" off each side, I guarantee that it'll hold.

Or, take a center punch and dimple each side in several places to raise some "tooth" to help hold.
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