npalen
Elite Member
https://hoseendchamber.com/about-hose-end-chamber/operating-instructions
A solution to pressure build-up in hoses.
A solution to pressure build-up in hoses.
Loader WHAT IS QUICK ABOUT QUICK COUPLINGS?
- Thread starter Talisker
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Omega Woods
Platinum Member
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- Mar 7, 2016
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- Soddy Daisy, TN
- Tractor
- Branson 4520R, Kubota BX2380, Kubota RTV-X110C, Bobcat E50, ASV RT-50
I always hook the hoses together on my attachments when disconnected. Makes it much easier to attach them when the time comes.
Before I found out this trick and cycling the controls on the machine I cussed the couplers a lot but now they are easy to use.
Before I found out this trick and cycling the controls on the machine I cussed the couplers a lot but now they are easy to use.
KWentling
Veteran Member
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- Rozet, Wyoming
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- Kubota BX22, Kubota ZD21, Kubota M7060
So I have a Kubota M7060 ordered and the single point was $696 option which I am getting. My trade in tractor had a Westendorf WL-42 loader. I priced their single point and I don't remember the exact cost but I think it was around $900. If one of the couplings goes bad on single points, they are replaceable. You don't have to buy the whole plate full. I believe the Kubota BX now has the single point as standard equipment.
npalen
Elite Member
That would be useful on something like a grapple where you have a male tip on one hose and a female coupler on the other, right? Looks like there could still be pressure buildup, however.
Edit: A small air bubble in the hoses or cylinder would leave a little room for expansion. The odds for success might be better since excess fluid could transfer from one hose to the other.
Edit: A small air bubble in the hoses or cylinder would leave a little room for expansion. The odds for success might be better since excess fluid could transfer from one hose to the other.
jmc
Elite Member
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- Jul 21, 2003
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- 3,105
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- SW Indiana
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- Ford 1920 4x4 (traded in on Kubota). Case 480F TLB w/4 in 1 bucket, 4x4. Gehl CTL60 tracked loader, Kubota L4330 GST
OP, you have a right to be frustrated because there are various reasons these couplers dont work so well. Unfortunately, some of us that have overcome the reason our particular setup didnt work for us seem to think that we have discovered the universal solution for everybody elses setup as well.
Case in point: I tried all the conventional advice here:
A) Equalizing the attachment's internal pressure by connecting its couplers together until the next time.
B) Relieving the tractor's internal pressure by whatever the manual says, usually with the engine off but the ignition partially on.
Neither one of these solved my problem on the flat faced couplers on EITHER my Kubota or my Gehl tracked loader. They let me get the couplers a little closer to connecting but not quite all the way.
What did solve my problem on BOTH of these completely different machines is holding the corresponding valve open while connecting the previously stubborn couplers. (Of course this is with the engine off and the ignition on)
If I knew how to post a video and if I still had a wife, I would video my struggle to make the connection and then how they slide together like butter once someone comes out and pushes the valve open button for me.
My theory is that even though there is no residual pressure in the tractor's or the attachment's circuit, there is a trapped volume of fluid between the coupler and its control valve that will not compress when the coupler needs it to. Holding the valve open will give that trapped fluid a place to go.
It could also be that on new tractors and on connectors that are rarely used, the connectors are too tight to allow any necessary leakage. This might be why people with well used equipment dont have this problem.
Holding that valve open requires a second person but I keep a c-clamp handy if I am by myself.
Also, I bought some couplers advertised as self-relieving from Discount Hydraulic. They werent too much more that a pair of regular flat faced couplers and they worked every time so far on the Gehl. I havent installed them on the Kubota yet.
Case in point: I tried all the conventional advice here:
A) Equalizing the attachment's internal pressure by connecting its couplers together until the next time.
B) Relieving the tractor's internal pressure by whatever the manual says, usually with the engine off but the ignition partially on.
Neither one of these solved my problem on the flat faced couplers on EITHER my Kubota or my Gehl tracked loader. They let me get the couplers a little closer to connecting but not quite all the way.
What did solve my problem on BOTH of these completely different machines is holding the corresponding valve open while connecting the previously stubborn couplers. (Of course this is with the engine off and the ignition on)
If I knew how to post a video and if I still had a wife, I would video my struggle to make the connection and then how they slide together like butter once someone comes out and pushes the valve open button for me.
My theory is that even though there is no residual pressure in the tractor's or the attachment's circuit, there is a trapped volume of fluid between the coupler and its control valve that will not compress when the coupler needs it to. Holding the valve open will give that trapped fluid a place to go.
It could also be that on new tractors and on connectors that are rarely used, the connectors are too tight to allow any necessary leakage. This might be why people with well used equipment dont have this problem.
Holding that valve open requires a second person but I keep a c-clamp handy if I am by myself.
Also, I bought some couplers advertised as self-relieving from Discount Hydraulic. They werent too much more that a pair of regular flat faced couplers and they worked every time so far on the Gehl. I havent installed them on the Kubota yet.
npalen
Elite Member
Plus one on using the valve to relieve pressure when plugging in.
k0ua
Epic Contributor
Yes, that would work, and if you do what I outlined to do, which is as soon as you uncouple from the tractor, you couple the ends of the implement back together, assuming you were smart enough to have both a male and a female end so they will couple, THEN you uncouple the ends and let some of the oil puke back out on to the ground. It is a couple of drops . Then you couple them back together to prevent the ingress of dirt or water or water vapor. There will be a deficit of oil in the lines as some puked out when you did the couple and uncouple thing. NOW pressure cannot build to the extent that it could, and even if a little pressure builds in the lines there is a little air in the lines, and you can compress the air as you couple the couplers back together on the tractor at a later time. Oil in in compressible, and air is compressible. If you do what I said to do, YOU WILL NEVER HAVE A PROBLEM HOOKING BACK UP AGAIN FOR AS LONG AS YOU SHALL LIVE.
k0ua
Epic Contributor
As you say, there isn't any pressure on the tractor side because with the pump shut off, you work the valve back and forth and any pressure in the lines is relieved thru the valve as it dumps any pressurized oil back to tank. You do this as soon as you shut off the tractor before you attempt to hook up the lines. AND because you followed my advice about connecting and disconnecting again the lines on the implement there won't be significant pressure on those lines either because there is a tiny amount of air in the lines. AGAIN, if you follow my advice you will never ever again ever as long as you shall live have a problem hooking up QC's. There is no problem hooking up QC's except what we make. But humans are hard headed and proud, and love to make problems where there are none.
k0ua
Epic Contributor
For those of you that have the same sex of coupler on your implement you could easily make a 6 inch piece of threaded pipe (pipe nipple) and the opposite sex couplers one each end of this pipe and plug in your implement's couplers as soon as you take them off. This will do two things. Ensure that no pressure will ever build in the lines of the implement and also keep the couplers clean on the implement. Just clean out the pipe of waste oil once in a while.
