Backhoe Backhoe Quick Disconnects Repressurizing??

[knute_m]

Several months ago, I bought a 2710 backhoe for my little 2015. Fantastic machine for pond maintenance and stump removal!

But, I've removed the backhoe twice, and I've put it back on twice. Both times, the hoses on the backhoe seem to have repressurized while the backhoe was stored. I now believe it is probably happening because I don't have a slab or garage where I can store it. It is stored on a gravel pad, over clay, where it slowly sinks.

Both times, I've had to use a wheel puller to release the pressure in the lines. I tried putting a rag over the longer QD line, and pushing the coupling with all my weight into a board, but nothing happened. I didn't want to whack it with a hammer -- so, thus, the wheel puller with a metal washer, rubber washer, and lots of rag wrapped around the coupling. Once it drains a little bit of oil, I can install the lines without any problem.

Anybody else had this problem? Any solutions?

Thanks,
Knute

 

[MtnViewRanch]

Take a couple of wrenches and loosen the quick disconnects and let the pressure bleed off. I know that it is a pain, but it works.

 

[LAWALLSTRACTOR]

Put a stand under the center of the backhoe for it to set on. Make the stand a couple of inches shorter than the height of the backhoe when installed. After the backhoe is setting on the stand there shouldn't be much pressure on the hoses. If you have anymore questions about it give me a call or ask me here on TBN. Good luck with it!

 

[knute_m]

Thanks Brian and Galen.

-- Brian -- As you suggest, loosening the couplings was my first thought. As I walked down to the barn for tools (about a quarter mile), I had second thoughts. The reason I ended up using the wheel puller was so that I wouldn't have to loosen any of the threaded couplings. I figured that by depressing the check valve button on the QD a very small amount, with rubber gasket material between the button and the wheel puller, I'd do little damage to the coupling. It also allowed me to put a pretty good buffer (over an inch of rags) between the high pressure hydraulic fluid and my skin. I've got kind of a hangup about loosening pressurized hydraulic couplings, but I've got a real concern that they lose more than just a little integrity each time they are tightened.

-- Galen -- your answer was kind of like the V-8 juice commercials. Why didn't I think of that? I guess that is what is so great about this forum. I've got a bunch of pressure treated lumber, and some 24-inch square concrete paver blocks, behind the barn. Some of this will become a backhoe stand over the weekend. I think that if I can keep the backhoe from moving more than a few fractions of an inch after I remove it, it will not repressurize.

Again, thank you both for your responses.

Knute

 

[J_J]

Several months ago, I bought a 2710 backhoe for my little 2015. Fantastic machine for pond maintenance and stump removal!

But, I've removed the backhoe twice, and I've put it back on twice. Both times, the hoses on the backhoe seem to have repressurized while the backhoe was stored. I now believe it is probably happening because I don't have a slab or garage where I can store it. It is stored on a gravel pad, over clay, where it slowly sinks.

Both times, I've had to use a wheel puller to release the pressure in the lines. I tried putting a rag over the longer QD line, and pushing the coupling with all my weight into a board, but nothing happened. I didn't want to whack it with a hammer -- so, thus, the wheel puller with a metal washer, rubber washer, and lots of rag wrapped around the coupling. Once it drains a little bit of oil, I can install the lines without any problem.

Anybody else had this problem? Any solutions?

Thanks,
Knute

Yes, I have the answer to your problem, simply install a high pressure tee and high pressure steel shut off valve on the backhoe QD. I believe you only need one setup. Once installed, all you have to do when connecting the QD's, is to open the valve and release the pressure, then you should be able to connect. You can also use the valve to install a pressure gage to check pressure.

 

[J_J]

Thanks Brian and Galen.

-- Brian -- As you suggest, loosening the couplings was my first thought. As I walked down to the barn for tools (about a quarter mile), I had second thoughts. The reason I ended up using the wheel puller was so that I wouldn't have to loosen any of the threaded couplings. I figured that by depressing the check valve button on the QD a very small amount, with rubber gasket material between the button and the wheel puller, I'd do little damage to the coupling. It also allowed me to put a pretty good buffer (over an inch of rags) between the high pressure hydraulic fluid and my skin. I've got kind of a hangup about loosening pressurized hydraulic couplings, but I've got a real concern that they lose more than just a little integrity each time they are tightened.

-- Galen -- your answer was kind of like the V-8 juice commercials. Why didn't I think of that? I guess that is what is so great about this forum. I've got a bunch of pressure treated lumber, and some 24-inch square concrete paver blocks, behind the barn. Some of this will become a backhoe stand over the weekend. I think that if I can keep the backhoe from moving more than a few fractions of an inch after I remove it, it will not repressurize.

Again, thank you both for your responses.

Knute

Just about any system with QD's, can build up pressure just by an increase in temperature change. Also, if those QD's are left in the rain, and you have a temperature drop, they can/will suck in some water or air.

 

[tommu56]

If the valves are on hoe while its proped up move the levers to balance pressure in lines.

tom

 

[bindian]

Several months ago, I bought a 2710 backhoe for my little 2015. Fantastic machine for pond maintenance and stump removal!

But, I've removed the backhoe twice, and I've put it back on twice. Both times, the hoses on the backhoe seem to have repressurized while the backhoe was stored. I now believe it is probably happening because I don't have a slab or garage where I can store it. It is stored on a gravel pad, over clay, where it slowly sinks.

Both times, I've had to use a wheel puller to release the pressure in the lines. I tried putting a rag over the longer QD line, and pushing the coupling with all my weight into a board, but nothing happened. I didn't want to whack it with a hammer -- so, thus, the wheel puller with a metal washer, rubber washer, and lots of rag wrapped around the coupling. Once it drains a little bit of oil, I can install the lines without any problem.

Anybody else had this problem? Any solutions?

Thanks,
Knute

Knute,
Once you have demounted the BH, and the tractor is a few feet away from the BH, put some blocks under it. I use 3. One under each stabilizer pivot pin and one under the boom pivot pin. Then I settle the BH down on the blocks. Turn the tractor off, move all BH controls, then move the remote lever to netral. I then wiggle all BH controls one more time before disconnecting the hoses. No pressure anywhere. Oh yeah, I have the fixed thumb deployed to aid in stabilization.
hugs, Brandi

 

[dbelisle]

If any of my attachments are off for any length of time there is pressure on the hoses . I just grab the hose with the male disconnect and hit it square on a flat part of the BK or FEL. A little fuid will be released and it will couple right up.....


Dave in NH

 

[Tim_in_IA]

maybe you could just make a small hydraulic coupler that was a male on one side and a female on the other and connect the two hydraulic connectors together when you put it in storage? Then rest it on wood or concrete blocks as described and the pressure would balance.

 

[DigginJB]

Knute, you're getting some good advice & answers - and Brandi is right.

I had the same issue at first and got a good suggestion from my dealer (in an emergency - had to bury a horse with its teenage girl standing there sobbing) of how to release the pressure. Since then I just always let the BH completely down until every hyd circuit is totally equalized/unpressurized. Before undoing any QDs I make sure everything including 3-point is down all the way, float & return the loader & BH controls, and HST is in neutral. The 2 QD male/female BH lines get mated as soon as I pull 'em off the tactor, and the 3rd end goes into a baggie. Haven't had any pressure issues since, but it does take a little more fuss (like an extra minute?) to get the BH back up into mounting height. Since I drop the BH pretty frequently & all over the place, this still is faster than dragging blocks around... (Uhh, yes - it IS easier & faster on the slab!!)

 

[knute_m]

Thanks all.

Over the weekend I ran into one of the family members who owns the dealership where I got my tractor. I mentioned this problem to him.

He said that after everything is disconnected, I should release additional pressure from the two male lines on the backhoe.

As DigginJB suggested, I already have been putting all my ends in plastic bags with tie wraps to keep them from getting dirty.

Again, thanks all,
Knute

 

[bindian]

Hey guys,
TSC has rubber dust covers for the QDs. They also attach to the line when the QD is connected. They are a little more handy and quicker than baggies.
hugs, Brandi

 

[tommu56]

I have been coupling the 2 hoses (bx 23 has male and female on hoe)together when off tractor then when you move sticks around presure equilizes and you dont need dust caps.


dont you have to hook the ones back together on tractor in the same way?

tom

 

[bindian]

I have been coupling the 2 hoses (bx 23 has male and female on hoe)together when off tractor then when you move sticks around presure equilizes and you dont need dust caps.


dont you have to hook the ones back together on tractor in the same way?

tom

Tom,
My tractor QDs are hard mounted and all are female. They have dust plugs attached to the fittings.
hugs, Brandi