Repairing metal hydraulic line

[N8ghz]

I would try it. Loosen at least one-end so as to not build-up any pressure, which will keep blowing your solder back in your face.

You may have to clean it several times before the solder starts to 'tin' as you burn off the oil inside.
Use a power wire-brush or a fine file or sandpaper...not just a tooth-brush.

It will need to be virgin steel...and the little grain you make will help the bond

 

[Mechanos]

The lines he's talking about are most likely the two lines that run from the hydro trans to the oil cooler. Not sure about the 755, but on the 855 & 955 they are more like a 3/8" or 1/2" line. These lines are notorious for rubbing and developing leaks as a result. These lines are about $65 each from Deere.

They have ORFS ends.

 

[Soundguy]

Compression unions won't work on pressure lines, but may work on a return line.

1000% pure BS

you can get hyd lines made up that go to compression fittings. i have a box of fittings at my shop to prove it. I needed to repair a 3/8 hyd hard line in an odd spot where it goes to a pump .. original setup was a orb at the pump and flare to the line.. new replacement fitting was orb for the pump and compression at the end of a stubby hose.. all you did was cut the old flare off and union up.

have also used ( not brass! ) unions to patch hard lines in a pinch

I can post a pic of the hyd fittings that go to compression fittings. they are specialty for sure.. but not magic in any way.. and DO work.. IMHO.. as good or better than banjo fittings with copper crush washers as hyd seals. and those work fine. got plenty of FEl's from the 50's plumbed with them.


look at the eaton 7000 series steel fittings.. they have compression fittings for solid lines, high pressure.. etc.

for his application a :

27305-04-04 27305-04-04 | 1/4" Flareless x 1/4" Flareless (Steel) should work. price of fitting is 2.67$
Carbon steel with anti-corrosion plating.
Interchanges with Weatherhead 7305 and Parker HBU
SAE #080101

working pressure 9000 PSI



soundguy

 

[Soundguy]

I have silver solder, flux and a propane torch. If I clean the outside really well, will brazing it work without removing the line?

yes.. blow the line clean first.. use some 1000 grit on the line to remove any plating.. fluxx well.. and silver solder. if you have something to make a patch out of it will be better.. say a short piece of brake tubing. ( IE.. steel line ).. or even conduit.. etc.. soemthing that will conform to the outside of the line of the same size. tin t up good, tin the reapir spot goos.. flux tha bajeebers out of it.. apply the patcha nd heat till solder flows after wetting.. remove heat.. wait till it dulls, then bleed the line and go.

soundguy

 

[N8ghz]

great to hear that they have fittings that work....the last ones I saw required a hydraulic swager hand tool to swage the ferrule.

If he buys one for a toilet it will not work.

 

[Soundguy]

why would he buy one for a toilet?

soundguy

 

[N8ghz]

because the local ACE don't have the kind you mention?

 

[Soundguy]

because the local ACE don't have the kind you mention?

why would you go to ace ( hardware ) store to pick up hyd parts?

I don't go to the pharmacy for wheel bearings ????

right tool for the right job.

right part for the right repair.

soundguy

 

[N8ghz]

it's rough in here...play nice

 

[Soundguy]

i'm playing nice. it just almost got a lil 'deep' here for a second. I thought a grocery store might get mentioned as a source of hyd repair parts for a moment..


soundguy