John Deere hydraulic restriction
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- Опубліковано 21 лис 2021
- If you have spent any time around the loader SCV on your JD tractor, you might have noticed an extra fitting on the lower side of the circuit. This video talks about what that is and how it works.
If you want to increase the hydraulic flow on your 1, 2, or 3E series tractor, visit www.hydrosplus.com
Very good tips enjoy watching your videos 👍
Super helpful, thank you!
Thanks for taking some of the mystery out of these hydraulic circuits. It's almost like the loader boom arms need a 1st and 2nd gear for when there is a load present whether up or down. When using pallet forks making smooth adjustments can be tricky even raising the load. Possibly some kind of load sensor that dictates the circuit flow when loaded, but that just sounds expensive?
They make all kinds of features similar to what you're suggesting, but you're also right that they are very expensive. One interesting option that's very expensive is a pressure multiplier. If you added one, you could use the loader at the normal 2000 psi, but as an option, you could engage the multiplier in situations where you are trying to lift something heavy as a one off situation. With it, you could bump the pressure up to 3500 or even higher. The pump would still be at 2000, but the circuit after the multiplier on the loader would have the higher pressure temporarily. Not for everyone, but would be nice in some situations.
That was a great explanation. Thanks
Great information. p.s. Your video quality is getting better 😁👍
Another great video ‼️👍🏻
Great info
Not only control but it prevents cavitation. Cavitation would destroy your cylinder and or valve.
As you have described this arrangement it would be meter in and the cylinder would cavitate, shouldn't it be meter out?
Good info saw you on TTWT. Innovation in the sub compact tractor market is sorely needed. How about Kubota BX's?
Nothing with the Kubota's yet, but that would be the next brand up to look at. Unfortunately, nothing in the near future planned.
that valve is a safety valve. its on the down side in case the hose brakes it wont slam to the ground .
Great information, now that the rest of the J.D. 1 and 2 series world knows that this restrictor “puck” is in there, I wonder if it would not be a problem if I were to drill out the center hole a bit larger for more flow but still having it there for its intended purpose. 🤔 As we have just been informed, taking it out completely is clearly a safety issue.
My opinion is that you really don't need any more speed going down, but as mentioned in the video, I was getting enough restriction with a much larger pump that it was pulling down the rpms. I drilled one out a very small amount...the next inch size bit up, and it got a lot faster. Almost like it wasn't in there. I need to do more testing, but I was a bit surprised how fast it was just taking out a little material.
@@HydrosPlus I see, please keep us all informed as to your findings as you progress, it will be greatly appreciated by all I’m sure.
I have a 2020 JD 1025R with factory installed Loader & Backhoe. As it is currently configured it performs okay, but after watching some of your other videos I am definitely interested in purchasing one of your improved hydraulic pumps. I believe it is called a high volume pump but I wouldn’t swear to it. At any rate I would like to touch base with you sometime in the spring after we’re through with the Holidays and winter weather.
I have a question regarding the backhoe after the improvements with the new pump, I’ve seen where the hydraulic cylinder that controls the curl of the bucket gets what we’ll call, bent out of shape. Is this due to the hydraulics having more flow or because the operator wasn’t paying attention or both? If you install a high volume pump and then turn down the “pressure” doesn’t this defeat the purpose of having the new pump in the first place?
And, when I purchase a new pump, what else would you recommend I purchase as well to ensure a complete upgrade, or would the pump be all I would need?
Any assistance would be appreciated…
@@speedbuggy6269 for what you are wanting, you can purchase the High capacity or Extreme capacity kits. They will include the performance kit as well as a higher flow pump. I personally recommend the extreme kit because the performance is better and there are no down sides compared to the high capacity kit.
In regards to the bending of the curl cylinder, this upgrade doesn't increase your chances of bending that cylinder. I personally think this is a cylinder issue and not a user issue. You really shouldn't be able to bend a cylinder on a small tractor like this, regardless of the pressure setting, because there isn't enough weight. This means to me that they have undersized the cylinder.
When you're ready to pull the trigger, give me a ring at 501.454.4652 and I'll answer any questions you have before you order. Thanks for the comment!
I was looking for an o-ring boss seal 2 way restrictor for 2 circuits on my snowblower. I'm adding chute rotation and chute deflector control on it. I could only find NPT restrictors and I hate that style. Finally found out that Brand Hydraulics makes them in SAE #8 and I ordered some through my local Motion Industries. I'm getting some for my hydraulic 3rd link too. Where did you get yours and do they make them in ORB style? I definitely need them with the high flow pump!
the two way restrictor in the video is from Parker. I took a quick look and I don't see an ORB version from Parker, only JIC and ORFS. I've never tried it, but I've been told that you can add a o-ring to a JIC and use it as an ORB fitting because they have the same threads. I would probably try it with something else before I bought a JIC restrictor, but just wanted to pass that info along. Here is the parker page with part numbers - ph.parker.com/us/en/orifice-fittings-orifice-fitting-1
You need a cross over block adjustable flow and diverts fluid when the chute hits the stops
Do you have a part number I need one thanks
So, did you solve the problem of the restrictor and higher flow bogging down the engine? I think that's what you said was an issue with the high flow pump.
That was on a very high flow experimental pump, and I haven't worked on it recently because I think it may have some other challenges. That said, the solution for that problem is likely larger cylinders on the lift circuit along with a larger orifice in the one way valve. I don't think you can solve it without larger cylinders without making the loader too sensitive under load. Even a small increase in the orifice size makes it pretty quick with the stock lift cylinders.
There is one other consideration here, and that is the PRV valve. Another way to eliminate the bogging is to have a lower setting so it doesn't strain the engine when it goes into relief. I probably had mine set to 2500psi or so when it was bogging, but I can probably put it back to 1900 or so and it won't bog. This has other obvious trade-offs, but it's another way to skin the cat, just not one that would work for me.
@@HydrosPlus Ah OK. I was thinking it was an issue with the extreme kit. Thanks for the detailed reply.
Thanks for the explanation. Can you tell me the brand of the hose fittings you have there, they look like a match to the fittings on my tractor. Thanks
The quick coupler is either from my JD 1025R or Summit Hydraulics. The restrictor housing and orifice are from my JD 1025R. I'm not sure of the brand on either of them, but the fitting size is a -6 SAE/ORB which equates to 3/8"
Not sure if that was the exact question, but let me know if this helps.
@@HydrosPlus thanks for the quick reply, I should have specified, I was looking for the elbow crimp on hose fittings. I Installed the jd third function and I’m trying to make a setup to get lines out to end of loader boom. I’m trying to make it look somewhat oem, but can’t find those fittings…
@@patrickmccaffrey5807 ah, sorry I don't know. I had them made at my local Parker Store, but that doesn't mean that they are Parker brand. I will try to remember to ask the next time I'm in there and I'll let you know.
Ok, thanks. And thanks again for the quick replies. Any idea on when you will be selling the boom hardline kit you mentioned in another video?
@@patrickmccaffrey5807 No problem. The boom hard lines were supposed be be here on 1/4, but everything is taking longer. I'm waiting for an update, but I feel confident that they will be ready to ship by the end of the month...probably earlier. I'll update my site and upload a video once they are ready.
Anything on the D series yet for hydraulics?
Looking at the D series, it's unlikely that we'll have anything for those. Unfortunately, not a whole lot of them out there and based on the schematic, it doesn't look like anything I currently have would work on it. If you have a D series and can send pictures of the pumps, I could confirm.
@@HydrosPlus I kinda looked the other day I’m not real sure but I think the pump is directly behind the right hand side back wheel. Right hand side meaning setting in the seat
one problem I see is that its from china
Yep - as are most hydraulic fittings. Some are made in the states, but most are imported from India or China, regardless of the brand.