Hooking Hydraulic lines up on Backhoe

[ChrisRyan]

I tried doing a search and figured I could just ask the question here.

We got the tractor on Saturday (30 degrees during the day) and had the backhoe attached most of the day. In the afternoon we unhooked it and put the box blade on. I've been using the box blade for a bit and went today to try and hook back the backhoe.

I cannot hook the female end coming from the backhoe to the male end of the tractor. The nipple inside the hook up won't release and thus not being able to lock together. I've tried playing with the controls and letting air out, but still nothing. I even drained a bit of hydraulic fluid from the backhoe, still nothing.

What am I missing here? Is it just due to weather? It was about 55 here today with plenty of sun.

The dealer is coming by on Saturday to drop off some stuff, so I will have him give a hand, but I feel like I'm missing something obvious.

Thanks for the help.

 

[Asteral]

Nope that sounds like it still has back pressure on the lines still if you take a Rag(towel) and wrap it around a socket extension and the apply pressure to the nipple( Female Side) it should release the pressure and squirt out some oil, then do the same with the male end wrap the Rag(towel) around it and gently press it down on a hard surface it too should release the pressure on the line a squirt out the oil, i've seen this happen a few times and this is one of the easiest ways to fix the pressure issue i have found, if this doesn't fix your issue they you may have to wait for your dealer to drop.

 

[ChrisRyan]

Nope that sounds like it still has back pressure on the lines still if you take a Rag(towel) and wrap it around a socket extension and the apply pressure to the nipple( Female Side) it should release the pressure and squirt out some oil, then do the same with the male end wrap the Rag(towel) around it and gently press it down on a hard surface it too should release the pressure on the line a squirt out the oil, i've seen this happen a few times and this is one of the easiest ways to fix the pressure issue i have found, if this doesn't fix your issue they you may have to wait for your dealer to drop.

I'm assuming the rag is just to catch the oil. We tried this a bunch, the nipple (plunger) does not budge on the female end no matter how hard we press. I mean, we had two grown men pushing with all our might...not a budge.

 

[ovrszd]

Is the hoe being held up by the outriggers? If so wouldn't that create pressure in the hoe side?

Another thing, you are 25 degrees warmer today than when you took the hoe off?? That's a big problem...

 

[ChrisRyan]

Is the hoe being held up by the outriggers? If so wouldn't that create pressure in the hoe side?

Another thing, you are 25 degrees warmer today than when you took the hoe off?? That's a big problem...

The Backhoe is held up by outriggers, but I don't see anyway to avoid that always happening when you take it off.

Yes, its about 25 degrees warmer and had sun on it. My plan was to try it tomorrow morning when its closer to original temp and not sunny. Hoping that will help a bunch

 

[Asteral]

yea it is to soak up the excess oil, also to prevent tool marks or accidental damage to the nipple, and yikes that's really pressurized then if even that isn't working, the temperature difference may be part of the issue but if it's sat overnight and has been in the sun most of the day the oil should be almost ambient temperature by now, so it shouldn't be making that much of a difference i would think, but i'm also not an expert when it comes to hydraulics and oil temperature differences.
this advice is just coming from what we have seen a few times here in texas.

 

[RickB]

The Backhoe is held up by outriggers, but I don't see anyway to avoid that always happening when you take it off.

Yes, its about 25 degrees warmer and had sun on it. My plan was to try it tomorrow morning when its closer to original temp and not sunny. Hoping that will help a bunch

When you dismount the hoe you should use the tractor hydraulics to lower the backhoe frame to the ground. IT also helps to couple the backhoe supply and return hoses together. This keeps the couplers clean and will help reduce instances of pressurized lines.

 

[ovrszd]

My neighbor had a 3pt hoe. When he detached it he sat it on wooden blocks with the outriggers resting on the ground.

Hopefully some 3pt backhoe guys will chime in with a solution to your current situation.

I would suggest shutting off the tractor and then activating every valve to relieve any pressure before detaching the hoses.

 

[ChrisRyan]

My neighbor had a 3pt hoe. When he detached it he sat it on wooden blocks with the outriggers resting on the ground.

Hopefully some 3pt backhoe guys will chime in with a solution to your current situation.

I would suggest shutting off the tractor and then activating every valve to relieve any pressure before detaching the hoses.

It actually hooks up to the tractor frame, not the 3 point hitch. But I'm going to try a couple of things and hopefully get some good advice tonight on things to try

 

[ovrszd]

It actually hooks up to the tractor frame, not the 3 point hitch. But I'm going to try a couple of things and hopefully get some good advice tonight on things to try

Same result. Unpin it from the tractor, then let it down on blocks, shut off tractor and release all pressure in every circuit, then uncouple hoses.