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Crack in a complex shaped hard hydraulic line

K

Ken Macfarlane

Well-known Member
Got a crack under the f?rule on a hard line, so can?t braze it or weld it from the outside.

Anyone ever braze from the inside? About 1/2? ID. I?ve got no experience brazing so don?t know if it will suck into gaps like solder.

Will probably get a hose made next week if this fails but it will need a bunch of stacked 45?s to get clear on one end.
cvphoto22832.jpg
 

How about a new different steel line to just get clear, then a hose to go the rest of the way?
 
Thinking along those lines. they can cut my line in half and
reflare and replace this cracked end with hose. It runs in a
bank of hard lines but there is room to break out and run on
top.. The rest of this allis Chalmers won?t win any beauty
contests so the hydraulic lines don?t need to either lol.
 
Lot of 'if's involved here. Can you get it clean enough? Is it an alloy that will take braising rod right? Will the heat cycles affect the metal? Will it hold under pressure? How much pressure? Braising likes a nice clean break of fresh non-oxidized metal. If you got in there with a small dremel and notched the crack a bit, you might get it to stick. I have serious concerns about the thermal stress and pressure. Find a different fix.
 
No expert but I wouldn't trust my brazing ability with a 2500# hyd line. I'd cut, flare, and adapt a flexible line as others have suggested.
 
Im sure it could be brazed but personally i think it would be Time Wise just to have another made. If it was easily accessible and i had plenty of time sure why not save the dime but sometimes it just aint worth it.
 
That was 4 hours and 100$ of new big crows foot flare but wrenches / wobble extensions to remove. Previous owner helpfully torched a hole in the cab floor where they had tried to tighten it.

Probably not a good spot to reinstall and find the brazing didn?t hold up!
 
Ken, any way to use 1/2" brake line and make a new tube? I had to do that for corn planter once down inside the frame. Just check the working pressure of the brake line, I was surprised how high it was for what I used. If I remember right got it at Napa. Paul
 
Got a crack under the f?rule on a hard line, so can?t braze it or weld it from the outside.
Click to expand...

A good hydraulic shop can make you a new hard line in whole or part. Easiest way out is to cut her back to a spot where you have 4-5" of straight run and 3/4" space on both sides of the line and just replace the hard line you removed.
 
On second thought, there's quite a few options, one of which is to use a long fitting, cut your line behind the ferrule, and add the new fitting. Cheap and easy fix if you have a well stocked hydraulic shop in your neighborhood or you have time to find a fitting online.
 
I had problems with a soild steering line flare cracking on my tractor, had one solid line cut back and switched over to rubber hose, and a new rubber hose to replace the other solid line.
cvphoto22863.jpg


cvphoto22864.jpg
 
(quoted from post at 07:43:34 05/12/19) Got a crack under the f?rule on a hard line, so can?t braze it or weld it from the outside.

Anyone ever braze from the inside? About 1/2? ID. I?ve got no experience brazing so don?t know if it will suck into gaps like solder.

Will probably get a hose made next week if this fails but it will need a bunch of stacked 45?s to get clear on one end.
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto22832.jpg">
Click to expand...

A hydraulic shop will have all sorts of "flareless" hydraulic repair fittings and crimp-on hose ends that will grab on to and seal to the steel line after you cut the bad flare off.

One way to repair it would be to have a hydraulic hose made that's an inch or two longer with a repair fitting at the end to attach to the steel line after the bad flare is cut off.

Gates_6G-6MFA_Coupling.jpg
 
Silver Solder weld it (on the inside). It may be cheaper to pay for it to be welded than buying the things needed to weld it yourself.
 
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