Another questions re loader: JD3010 + JD48 loader

t.henrie

Member
Through research and some helpful information on this forum, I have established that the JD3010's hydraulic system puts out 16gpm at about 2000psi. I am trying to find the right 4-way control valve for my new JD48 loader. I know it must be a closed-center valve.

I watched a video on Youtube where a company recommends a control valve that flows 13gpm and they claim it is appropriate for any tractor from 50-80hp. It runs close to $500.

https://www.shortlineparts.com/valve-kit-for-koyker-155-loader-k673010html

I checked with a local business who came up with a valve that runs "up to 26 gpm", but he couldn't find anything in the 16gpm range. The price for this valve is about the same as the 13gpm valve.

I saw a post where somebody indicated that reducing the flow rate below the 16gpm might improve the ability to handle the loader bucket and lift more smoothly without making it too slow. I believe they were talking about 12gpm.

Which valve would you go with for the 3010's 16gpm and 2000psi system for a JD48 loader? Any other recommendations?
 
Over size valve should not slow loader. Takes fixed amount of
fluid in each cylinder. Too small of valve could slow things
down.
 
Did you see the photos I posted for the fittings you’ll need to
plumb it in . I got the numbers from tx Jim who I think got em
from tim s hopefully I gave everyone the proper credit
 
It would be interesting to put some coupler tips on the loader oil hoses and plug them in to the tractor's hydraulic couplers and get a feel for how the loader operates.

Even though the pump puts out quite a bit more flow, the tractor remotes flow only 6 or 8 GPM's each.

I suspect you would be surprised how fast the loader moves with that flow.

I;m almost certain the 13 GPM valve you have considered would be just fine.
 

I'm the poster that ""incorrectly stated due to loss of infinitely controlling hyd function"" one shouldn't utilize a larger GPM flow valve on smaller GPM system but I was corrected by a knowledgeable hyd person. Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output.

I've seen numerous new 2 spool hyd control valves in the 16-25 GPM range that have the required closed center capability operation or sale between $200-$300 at several hyd component sales companies.
 
t.henrie, this is the valve I installed 3 years ago on my 4010 with a JD 48 loader. Ordered it along with the closed center plug, had to turn the bypass screw in all the
way. The only thing I wish I would have done differently, is that I should have done it years ago. There are higher GPM valves, but at a cost. Best of luck.

Mike
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(quoted from post at 03:05:15 06/17/20)
I'm the poster that ""incorrectly stated due to loss of infinitely controlling hyd function"" one shouldn't utilize a larger GPM flow valve on smaller GPM system but I was corrected by a knowledgeable hyd person. Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output.

I've seen numerous new 2 spool hyd control valves in the 16-25 GPM range that have the required closed center capability operation or sale between $200-$300 at several hyd component sales companies.

" Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output."

Jim, I disagree with "Person". Since this is an auxiliary valve on a closed-center system the valve does not HAVE to be rated for the full pump output.

Proof of that would be his very tractor's SCV's that only flow 6-8 gallons per minute EACH.

FUNNY, a regular poster in here a few years back (an engineer, IIRC, I can't remember his "handle") installed restrictors in his loader circuits 'cause he thought the loader moved too fast and would be torn up by the strain. Now we have folks that think the loader needs a full 16 GPM's to operate.

As I wrote before, it would be interesting to observe how the loader would operate feed from the tractor's SCV's with 6-8 GPM's before making an expensive decision as to which valve to buy.
 
My f11 is plumed in the outlets on the back and if I turn it all
the way up it’ll raise full height in under 15 seconds . It’ll lift
3000 pounds at a dead idle
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Well, here's what the tech people at Surplus told me: If the valve gpm rating does not exceed the tractor's gpm output, the valve will eventually fail and leak. The JD3010 system is 16gpm, but apparently it's only 6-8gpm at the quick-connects. So, the question is what is the pressure output of the JD3010 system at the location where I plan to plumb it in.

I was planning on tapping it into the elbow just ahead of the brake pedals for the input and return it into the tank top. Anybody know what the gpm is at that point?

Follow-on question is have you had any trouble with seals failing on the valve with the 10gpm unit you gave the link for?
 
(quoted from post at 09:14:00 06/17/20)
(quoted from post at 03:05:15 06/17/20)
I'm the poster that ""incorrectly stated due to loss of infinitely controlling hyd function"" one shouldn't utilize a larger GPM flow valve on smaller GPM system but I was corrected by a knowledgeable hyd person. Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output.

I've seen numerous new 2 spool hyd control valves in the 16-25 GPM range that have the required closed center capability operation or sale between $200-$300 at several hyd component sales companies.

" Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output."

Jim, I disagree with "Person". Since this is an auxiliary valve on a closed-center system the valve does not HAVE to be rated for the full pump output.

Proof of that would be his very tractor's SCV's that only flow 6-8 gallons per minute EACH.

FUNNY, a regular poster in here a few years back (an engineer, IIRC, I can't remember his "handle") installed restrictors in his loader circuits 'cause he thought the loader moved too fast and would be torn up by the strain. Now we have folks that think the loader needs a full 16 GPM's to operate.

As I wrote before, it would be interesting to observe how the loader would operate feed from the tractor's SCV's with 6-8 GPM's before making an expensive decision as to which valve to buy.

My tractor only has one set of quick-connects and one scv, so I'd have to add another scv and quick-connects, which is more expensive than adding a joystick control on the loader. Then I can choose whether to tap into the system or use the quick-connects to feed the control valve. If I tap into the system up by the brake pedals I believe I get a little higher gpm and I still have the rear quick-connects for other uses.
 
In the 3+ years I have had it on my 4010, no issues yet. Neighbor has the same joystick, on a 3020, probably 5 years longer than I have, no issues yet. I posted my
results, back then with the part numbers I used. I also "T'd" into the rockshaft return instead of a ported filter cover. Between that and making the old 48 a twin
tip/quick attach, I really like the loader a lot more.

Mike
 
(quoted from post at 15:26:11 06/17/20) In the 3+ years I have had it on my 4010, no issues yet. Neighbor has the same joystick, on a 3020, probably 5 years longer than I have, no issues yet. I posted my
results, back then with the part numbers I used. I also "T'd" into the rockshaft return instead of a ported filter cover. Between that and making the old 48 a twin
tip/quick attach, I really like the loader a lot more.

Mike

Thanks! That's what I needed to know. I think I'll order that same joystick tomorrow. Any chance you might post a photo of your mount for the joystick? I know the 4020 is a little longer in the body than the 3010, but it should give me an idea.

My loader is already a quick-tach, but the tractor is in Arizona and I have the loader hear in Utah at the moment. Trying to get the loader in shape to just hook it up when I take it down to AZ.
 
(quoted from post at 09:14:00 06/17/20)

" Person that corrected my statement stated control valve needs to be same GPM or larger than hyd pump output."

Jim, I disagree with "Person". Since this is an auxiliary valve on a closed-center system the valve does not HAVE to be rated for the full pump output.

Proof of that would be his very tractor's SCV's that only flow 6-8 gallons per minute EACH.

wore out
I was reporting what I was informed by a person on a different hyd discussion forum.Thanks for correcting me because I think info on tractor/implement discussion forums should be correct & it appears to me the older I get the more I state "incorrect info". LOL,Jim
 
Just to report back and add another question,

I got the control recommended above and made a mount for it. I have it connecting to the quick-couplers on the back and it's working fine. Thanks for the help.

Now for the question: The one remaining thing to do is to install the frame reinforcement doublers for the quick-tach. Since my loader didn't come with the doublers, I had them made out of 1/2" bar stock with square 5/8" holes punched in them, following what is shown in the parts manual. Problem is, there are engine and transmission mounts in the way on the inside of the frame, so I had to cut it shorter than what appears on the parts manual diagram. I have a 3010 tractor and it appears the parts diagram shows the parts for a 4010, which is longer in the frame. So, I wanted to ask if the doubler can be installed on the outside of the loader frame to the same effect, rather than on the inside of the tractor frame. Seems to me that as long as it's all tied together tightly with grade 8 bolts and nuts, it would have the same effect.

I may do both. Install the short ones on the inside and longer ones on the outside, just to make sure I don't end up with problems.

Anybody done that?
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