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Hydraulic question

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Forum Name: Shops, Barns, Varmints, and Trucks
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=208375
Printed Date: 04 Oct 2025 at 6:46pm
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Topic: Hydraulic question
Posted By: LouSWPA
Subject: Hydraulic question
Date Posted: 01 Oct 2025 at 5:00pm
I have a Royal King 37 hp tractor, with the backhoe attachment. If I don't bleed down the hydraulic system, tractor shut down, cycle all controls in tractor and hoe before I disconnect the hoe from the tractor, then I cannot get the quick disconnects reconnected when I setting up to use the hoe again. In that case, I then need to take cover off of controls and open the system to relieve the pressure. PITA!
my question is there something I can put in line that I can relieve the pressure w/o taking it all apart?


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I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27


Replies:
Posted By: DMiller
Date Posted: 01 Oct 2025 at 5:33pm
Have same issue with a 2305 Deere loader attachment, anything functional would be ridiculously expensive.

Posted By: LouSWPA
Date Posted: 01 Oct 2025 at 7:23pm
Dave, I'm sure you are right, but it sure would be nice to have a manual pressure relief that could be installed in line with the two hoses going to the hoe. 

-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: HudCo
Date Posted: 01 Oct 2025 at 7:29pm
pioneer 9500-4 series couplers connect under preasure

Posted By: LouSWPA
Date Posted: 01 Oct 2025 at 9:13pm
Originally posted by HudCo HudCo wrote:

pioneer 9500-4 series couplers connect under preasure 

Thanks Hud! Dave was right, not cheap!





-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: steve(ill)
Date Posted: 02 Oct 2025 at 3:16pm
could you put a 3000# valve with a couple 1/4 inch hoses between the supply and return lines as a JUMPER... open the valve and relieve the pressure back to suction side ?

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Like them all, but love the "B"s.

Posted By: LouSWPA
Date Posted: 03 Oct 2025 at 9:45am
Originally posted by steve(ill) steve(ill) wrote:

could you put a 3000# valve with a couple 1/4 inch hoses between the supply and return lines as a JUMPER... open the valve and relieve the pressure back to suction side ?

Steve, I don't think that would solve the problem completely. It would equalize the pressure between the supply and return on the hoe, but not necessarily between the hoe and the tractor. Most often it is only one line that is pressurized, but on a couple of occasions it is both. I know I am prone to 'forgetfulness', but I am pretty sure I am bleeding them at least most of time, yet, when it comes time to reconnect, I find one or both lines w/some pressure prohibiting me from making the connection. I suspect that as the hoe settles, the weight of the hoe on one or more of the cylinders is causing the issue. I need to discover a way to support the hoe better, I think. I was hoping for a relatively inexpensive solution of an inline pressure relief, but what I have seen so far is beyond my budget.


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: Tbone95
Date Posted: 03 Oct 2025 at 11:03am
Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere.

Posted By: LouSWPA
Date Posted: 03 Oct 2025 at 2:26pm
Originally posted by Tbone95 Tbone95 wrote:

Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere. I tried the slamming trick, but not enough man in me to get it to work!3000 psi system


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: Les Kerf
Date Posted: 03 Oct 2025 at 3:24pm
A quick google search came up with this:
https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B" rel="nofollow - https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B

Posted By: DiyDave
Date Posted: 03 Oct 2025 at 4:00pm
Where are you storing the backhoe?  If it gets full sun, the fluid can heat up and lock the fittings up, don't ask me how I know...Wink

Come back in the early AM or on a cloudy day, and sometimes the locked fittings work like a charm...


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Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!

Posted By: Coke-in-MN
Date Posted: 03 Oct 2025 at 6:34pm
Have that problem on Skid Loader and Snow Plow Shut off engine , cycle the valves , make connection , restart engine 

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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.

Posted By: Tbone95
Date Posted: 03 Oct 2025 at 7:05pm
Originally posted by Coke-in-MN Coke-in-MN wrote:

Have that problem on Skid Loader and Snow Plow Shut off engine , cycle the valves , make connection , restart engine 

But it’s on the hoe side? When disconnected?

Posted By: Tbone95
Date Posted: 03 Oct 2025 at 7:07pm
Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere.I tried the slamming trick, but not enough man in me to get it to work!3000 psi system

Bah! Don’t hit it with your purse, act like you mean it!!!🤣. So anyway, what about the tee and dump valve thing? Still too expensive?

Posted By: LouSWPA
Date Posted: 03 Oct 2025 at 8:00pm
Originally posted by Les Kerf Les Kerf wrote:

A quick google search came up with this:
https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B" rel="nofollow - https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B



AH Ha! now we are cooking! thank you sir


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: LouSWPA
Date Posted: 03 Oct 2025 at 8:06pm
Originally posted by Tbone95 Tbone95 wrote:

Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere.I tried the slamming trick, but not enough man in me to get it to work!3000 psi system

Bah! Don’t hit it with your purse, act like you mean it!!!�£. So anyway, what about the tee and dump valve thing? Still too expensive? I was considering that, except for carrying the can around, until Les came along! and, FOR YOUR INFORMATION, I DON'T CARRY A PURSE! I just carry a clutch!   


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: Les Kerf
Date Posted: 03 Oct 2025 at 8:37pm
Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Les Kerf Les Kerf wrote:

A quick google search came up with this:
https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B" rel="nofollow - https://www.amazon.com/Original-Hydraulic-Coupling-Pressure-Decompression/dp/B0BRTB5W4B



AH Ha! now we are cooking! thank you sir

You are most welcome Big smile
I remembered reading about those in the Farm Show Magazine some years ago; I have never actually touched one myself.

Posted By: DMiller
Date Posted: 04 Oct 2025 at 6:38am
Caution on adding a cross connection. What I see most times on simpler hydraulic systems is No Pilot control from one function to another. IE Boom Up or Boom down, or as with outriggers leg extend or retract. Placing a cross connect without concern can lead to a system immediate drain off and the machine settling in a less than optimal configuration, or the potential to fall onto the person connecting hoses.

On heavier or more complex systems they do have pilot valve blocks to block flow from one function to another to ‘Lock’ the major components in position. Simpler systems there is no pilot block set ups to cancel that.

My lawn mower has a loader attachment, no pilot system where will settle and hydraulically end up with system pressure on a cylinder side. Makes a mess every time I connect it back up but is expected.

Posted By: LouSWPA
Date Posted: 04 Oct 2025 at 6:50am
Originally posted by DiyDave DiyDave wrote:

Where are you storing the backhoe?  If it gets full sun, the fluid can heat up and lock the fittings up, don't ask me how I know...Wink

Come back in the early AM or on a cloudy day, and sometimes the locked fittings work like a charm...

Dave it lives outside, so your point is well taken.


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27

Posted By: Tbone95
Date Posted: 04 Oct 2025 at 7:23am
Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere.I tried the slamming trick, but not enough man in me to get it to work!3000 psi system

Bah! Don’t hit it with your purse, act like you mean it!!!�£. So anyway, what about the tee and dump valve thing? Still too expensive? I was considering that, except for carrying the can around, until Les came along! and, FOR YOUR INFORMATION, I DON'T CARRY A PURSE! I just carry a clutch!   
A man bag....a satchel.....just please no fanny packs!LOLLOLLOL

Posted By: LouSWPA
Date Posted: 04 Oct 2025 at 2:19pm
Originally posted by Tbone95 Tbone95 wrote:

Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Originally posted by LouSWPA LouSWPA wrote:

Originally posted by Tbone95 Tbone95 wrote:

Hmm, so cheap and dirty? Heavy on the dirty? Not much is cheap these days. How about just before the hose tip, put in a tee and a little ball valve on the branch of the tee.   Carry a coffee can with you when you hook up and crack the valve into the coffee can. If you can keep it clean dump it into your oil supply. If not pour it on moving parts. Not elegant but beats slamming the hose tip onto the drawbar and spraying oil everywhere.I tried the slamming trick, but not enough man in me to get it to work!3000 psi system

Bah! Don’t hit it with your purse, act like you mean it!!!�£. So anyway, what about the tee and dump valve thing? Still too expensive? I was considering that, except for carrying the can around, until Les came along! and, FOR YOUR INFORMATION, I DON'T CARRY A PURSE! I just carry a clutch!   
A man bag....a satchel.....just please no fanny packs!LOLLOLLOL


-------------
I am still confident of this;
I will see the goodness of the Lord in the land of the living.
Wait for the Lord;
be strong and take heart and wait for the Lord. Ps 27


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