Loader Pressure Release

   / Loader Pressure Release #1  

aeblank

Veteran Member
Joined
Aug 12, 2013
Messages
1,329
Location
Cadillac, MI
Tractor
Kubota L3940
So in this thread (http://www.tractorbynet.com/forums/...face-hyd-coupling-pressure-3.html#post4108995) we were discussing how QD fittings can be hard/impossible to re-attach after some amount of time. Temperature changes, settling, etc. can cause pressure to be behind the fitting.

I created a manifold (got my parts from KennyD!) to equalize and, if needed, vent pressure when I go to reattach the picture. It's slow moving....I bought the parts months ago. I assembled it recently. I'll attach it in a month or two. I'll know if it worked about April. HOWEVER, here it is......

 
   / Loader Pressure Release #2  
I drop my three point down all the way and move my loader joy stick in all directions with the engine off. Been working for me for many years now.
 
   / Loader Pressure Release
  • Thread Starter
#3  
I do that too. I *always* get some sort of pressure in the loader by the time I need to put it back on. No point in quick disconnects if I have to use a wrench to remove them to get rid of whatever (STUPID) residual pressure there is. I don't know if it's the loader settling or temperature swings, or what. All I know is that it's a problem.
 
   / Loader Pressure Release
  • Thread Starter
#4  
Finally put the blower on, which means I took the loader off.

 
   / Loader Pressure Release #5  
If you want to connect under pressure, then get the QD's that allow that.

If not, you have to make a dummy connector that relieves the pressure on the implement.

Sometimes the weight of the attachment will generate the pressure, and at other times the temp is a the problem.
 
   / Loader Pressure Release
  • Thread Starter
#6  
If you want to connect under pressure, then get the QD's that allow that.
Sometimes the weight of the attachment will generate the pressure, and at other times the temp is a the problem.

It's not that I *want* to. I try to get rid of all pressure (tractor off) and let the loader settle. I still have huge difficulties putting it back on, wrasslin' with the connectors every single friggin time. Temperature, I can't control, not to mention I don't want to be a slave to when I "can and can't" remove my loader.

If not, you have to make a dummy connector that relieves the pressure on the implement.

above is my dummy connector(s), with venting valve.

On my grapple, I connect the two sides together when I disconnect it. That keeps the connectors clean, and seems to eliminate any re-connection issues. I expect this manifold to perform the same function on my loader. I hope.
 
   / Loader Pressure Release #7  
I like it!!! How much $ are you in to it?:thumbsup:
 
   / Loader Pressure Release
  • Thread Starter
#8  
I can't remember!
I also bought a spare set of QDs to have on hand for the loader (they aren't the "ag" type that the local farm store would have).
Seems like maybe $35. In tractor-money, almost nothing.

Woulda loved something like this, but they're only 3-up, and I needed 4.
112-13053-manifold-3002.jpg
 
   / Loader Pressure Release #10  
It was about $40 spent with us (4 x $6.50, 3/8" Male 7241B QD's) and then about $10 for the fittings. The valve was not sourced through us.
 
   / Loader Pressure Release
  • Thread Starter
#11  
Valve was like $3 at Harbor Freight. So, $50-$55, I guess. Kinda high, but every time it (hopefully) saves me 20 minutes of insane frustration, the cost will go down. What's my hourly rate, maybe $50/hr? As an engineer, I could well be $150/hr. As a laborer that I often am at home, I'm what, $15/hr?....

We'll see!
 
   / Loader Pressure Release #12  
I just take a block of wood and strike the end of the male coupling, a little oil will squirt out and then it will connect. I havent damaged a coupling "yet", but I wouldnt want to use a hammer to strike the coupling with. I havent noticed pressure being a problem with the female end of a coupling.
 
   / Loader Pressure Release #13  
I just take a block of wood and strike the end of the male coupling, a little oil will squirt out and then it will connect. I havent damaged a coupling "yet", but I wouldnt want to use a hammer to strike the coupling with. I havent noticed pressure being a problem with the female end of a coupling.

Yes...but on the Kubota's the male fitting is on the tractor side-the females are on the loader hoses.
 
   / Loader Pressure Release
  • Thread Starter
#14  
SUPER happy to report that this manifold worked GREAT.

Last weekend it was warm, so I pulled the snowblower off.
Before mounting the loader, I lifted the hoses up, so they were the highest point.
I opened the valve and did hear a little pressure escape.

The connectors plugged into the tractor WITHOUT ANY STRUGGLE.
There was no breaking fittings loose, hitting pins with hammers/drift, no swear words, nothing.


 
   / Loader Pressure Release #15  
SUPER happy to report that this manifold worked GREAT.

Last weekend it was warm, so I pulled the snowblower off.
Before mounting the loader, I lifted the hoses up, so they were the highest point.
I opened the valve and did hear a little pressure escape.

The connectors plugged into the tractor WITHOUT ANY STRUGGLE.
There was no breaking fittings loose, hitting pins with hammers/drift, no swear words, nothing.

:thumbsup:
Thanks for the update.
 
   / Loader Pressure Release
  • Thread Starter
#16  
It was only a year in the making......
 

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