B2400 steel hydraulic line replacement

   / B2400 steel hydraulic line replacement #1  

blivy

Bronze Member
Joined
Aug 24, 2020
Messages
76
Location
Athens, Georgia
Tractor
1997 Gravely 564
I need some advice.
I’m trying to replace the steel hydraulic line that runs from the front all the way to the back just below the seat (right hand side off on seat and facing forward). This is the line connected to the three point hitch.
It had a small crack and would spray out hydraulic fluid whenever I raised a rear implement.

I’ve finally got the replacement line (1st photo) and have taken off all the places where the existing line attaches. (Next three photos)
However seems impossible to remove or snake this line out.
Before I start removing half the tractor trying to get to it…. Has anyone done this before and is there a simpler way I’m just not seeing?
Ant advice is appreciated.
Thanks!
 

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   / B2400 steel hydraulic line replacement #2  
You may have to resort to some compression fittings to get the line in place.

Steel tubing lines can be bent but this should be done with the proper size tubing Bender. There will also be angled compression fittings.

An alternative is to reroute the line Or just replace the failed section.
 
Last edited:
   / B2400 steel hydraulic line replacement
  • Thread Starter
#3  
You may have to resort to some compression fittings to get the line in place.

Steel tubing lines can be bent but this should be done with the proper size tubing Bender. There will also be angled compression fittings.

An alternative is to reroute the line Or just replace the failed section.
Replacing is what I’m trying to do. My issue is that even though I’ve disconnected the old line, it seems like it’s impossible to get out. I even more worried about trying to snake in the new replacement. I’m thinking I’ll have to remove a few things to get to it.

I’ll try and document as I go. My understanding is that while this isn’t a common problem, kubota has made at least four design upgrades to this section of steel hydraulic line so obviously it’s been a problem for some folks.
 
   / B2400 steel hydraulic line replacement #4  
You may have to resort to some compression fittings to get the line in place.

As mentioned, a compression fitting might do the trick. I had a line like that under the tractor frame from front to back that had a split in it (B series tractor). It was actually a pretty clean split. I ordered a new line from Kubota, but while waiting for it to come in, I decided to just cut the line at the split and couple it back together.

Used a Swagelock stainless compression fitting. Cleaned up the ends where it was cut, slid the ends and barrel of coupling on, and tightened. Worked great and it's been there for about 16 years. The new part is still hanging on the barn wall. Probably won't ever get used.

The couplings aren't cheap, but it's an easy fix and cheaper than replacing the line. Don't know if yours is a candidate, but it's worth considering if you're still wrestling with this. Good luck.
 
   / B2400 steel hydraulic line replacement #5  
YOU COULD TRY WELDING OR BRAZING THE PLACE IT IS LEAKING.
 
   / B2400 steel hydraulic line replacement
  • Thread Starter
#6  
As mentioned, a compression fitting might do the trick. I had a line like that under the tractor frame from front to back that had a split in it (B series tractor). It was actually a pretty clean split. I ordered a new line from Kubota, but while waiting for it to come in, I decided to just cut the line at the split and couple it back together.

Used a Swagelock stainless compression fitting. Cleaned up the ends where it was cut, slid the ends and barrel of coupling on, and tightened. Worked great and it's been there for about 16 years. The new part is still hanging on the barn wall. Probably won't ever get used.

The couplings aren't cheap, but it's an easy fix and cheaper than replacing the line. Don't know if yours is a candidate, but it's worth considering if you're still wrestling with this. Good luck.
Yep. Good idea. I’m taking tractor apart now to try and get to it. So far it’s a pain in the butt but not rocket science. Am making some discoveries along the way though so it’s worth it.
really looks like the PO was a bull in a China shop with this tractor. Glad he only had it for about 50 hours. It may not have survived him for the whole 200 it has on it!
 
   / B2400 steel hydraulic line replacement
  • Thread Starter
#7  
Started the steel hydraulic line replacement in my B2400. (Line that serves the three point hitch).
Turns out you need to remove (in order):
the seat,
the knob for the relief valve,
the black plastic cover that is right under the seat and surrounds the relief knob,
the knobs on the hitch & 4 wheel drive levers,
The black plastic that sits on top of the fender and surrounds those levers,
the tail and hazard light,
the right rear fender,
the rubber floor mat,
the floorboard,
the link between the floor board and the Hst pedals,
and several linkages on the right side below the floorboard for the brake and hst pedals.

And…almost done….

Just have this one last item to remove.
Anyone know what this is? Some kind of cotter pin?
Do you use a punch to knock it out?
First pic is source of the question. (It seems to be the last thing holding the hst pedal against the frame).
Next pic is for reference. Last pic is current state of tractor.

All in all glad to be doing this. I’m sure I’ll save some money and learn a bit by doing it myself.
 

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   / B2400 steel hydraulic line replacement #8  
I like th eidea of using a compression fitting to repair the line. Good idea!

What I usually do is cut the hydraulic line where necessary in order to remove it and then go to a shop that makes up hydraulic hoses. Get a hose made with the right ends and it's quite easy to snake back into place vs a steel line. It's also quite a bit cheaper than a new factory line.

If the hydraulics shop doesn't have the right fittings just get them to make the hose up with compression fittings and use your original ends.
 
   / B2400 steel hydraulic line replacement #9  
WOW!

That's a roll pin that's tapped in there to hold that assembly together. You can find parts diagrams online. Messicks is a great resource.

I would not be taking all that apart to fix this line, but I admire your determination.


1635326711425.png
 
   / B2400 steel hydraulic line replacement #10  
Hats off to you blivy !! It might be a pita but it is nice to have a newish tractor back the way it should be. And there is no better way to get to know your machine than by taking it apart.

gg
 

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