Kubota hydraulic pressure

Kubota hydraulic pressure DEFAULT
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Release of Hydraulic Pressure

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retcol
Join Date: Sep 2004
Posts: 107 Barron,wi
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2008-08-18          156170

Does anyone have a foolproof way to release the pressure in hydraulic connections especially when the outside air temperature is high? I currently have an LA853 loader but I have exeprienced the same thing with my LA753 and also my Westendorf loader. I don't want to open up the connection to release the pressure. My other loaders had the female end on the tractor so I would push the tip against a tire, but with my cab it is reversed. Other times of the year I never have a problem. I always make sure I release the pressure before I disconnect the hoses.

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____________________________________________________________________________________
Release of Hydraulic Pressure


2008-08-18          156171

Retcol; Being in a shed out of the sun helps a bunch, but even then I make an attempt to uncouple when the oil is hot from use and recouple early in the day when the oil is cool. That all sounds great, but it don't always happen that way so I usually just unscrew a coupler from the hose till it begins to seep a bit and in a couple seconds the pressure is gone. But for safety reasons always wrap a shop rag a couple times around it so that a sudden stream of high pressure oil can't penetrate the skin I know this isn't a recommended method or always a safe method but it is low cost and quick. When I had large farm impliments I would install a scheduel 120 "T" in the line with a high pressure steam ball valve to release the pressure. Frank. ....

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____________________________________________________________________________________
Release of Hydraulic Pressure


2008-08-19          156180

We have very few machines that the FEL comes off of very often so it's not a big problem. Our main issue is the zero tolerance for oil spillage.

What we did was make up a pair of short hoses with a ball valve between them and a coupler at each end. Two of these are connected as soon as the FEL is disconnected and left in place. To relieve pressure all you have to do is open the ball valve.

I've seen others reverse two of the couplers so that each line is one male, one female, then you just loop the hoses back together when you park the FEL. That seals the couplers too, keeps them cleaner.

Best of luck. ....

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Release of Hydraulic Pressure


2008-08-19          156186

Murf That is one heck of a good idea. The loop in the tractor circuit. How many times have I bumped the joy stick with my knee and deadheaded the hyd.

To relieve pressure I shove the nipple in and wiggle the joy stick. I don't recommend this. But it works for me. ....

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Release of Hydraulic Pressure


2008-08-19          156196

I have this problem when I run my skid steer a lot. All I do is shut off the machine and cycle the control levers (actually a foot pedal) a few times. Voila! ....

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Release of Hydraulic Pressure

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8x56mn
Join Date: Aug 2006
Posts: 167 Watkins Glen NY
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2008-08-21          156217

Perhaps I'm missing something. If you lower the implament with the tractor shutt off and move the control valve all pressure is dumped, why are you finding it difficult to open the dissconnects? There should be no pressure on the hoses. ....

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Release of Hydraulic Pressure


2008-08-21          156220

When you unhook your loader you use hydraulics to lift the loader frame off the tractor. If you do this when the oil is cool in the am and go back in the afternoon when the sun has been on the hyd lines sometimes there is pressure.

I've had mine off for weeks at a time and no problem. Yet I've taken it off to service tractor and hour later could not rehook the boom hose.

The only common problem I've figured out is the sun hitting the loader. ....

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____________________________________________________________________________________
Release of Hydraulic Pressure


2008-08-21          156227

8x56mn; In theory you are correct, all pressure released, there should be no problem to rehook the couplers. Now in the real world the thing you are missing is that after the loader is off perhaps the stands sink a bit into the soil putting a bit of pressure on the boom cylinders, the air temperature comes up, the sun shines on black hydraulic hoses, etc. Usually the temperature of the fluid in the loader cylinders, the hoses, fittings, etc. is the culprit. If you could always unhook the loader hoses when the oil is hot and rehook when it cools off baring any of the other factors I mentioned things would work fine. Now if you have never had a problem regardless of all the things I brought up you are indeed fortunate. OK now again in the real world that might indicate that you have some air in the cylinders or hoses that is easily compressable instead of 100% oil which will not compress. Enjoy your day. Frank. ....

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Release of Hydraulic Pressure

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8x56mn
Join Date: Aug 2006
Posts: 167 Watkins Glen NY
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2008-08-22          156238

Yes I agree about the fluid heating, up , but again why not just wiggle the valve and let any build up go back to the tank, you know real world!:) ....

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____________________________________________________________________________________
Release of Hydraulic Pressure


2008-08-22          156239

8x56mn; I apologize for any misunderstanding we may have OK. But after the loader has been disconected from the tractor it doesn't matter how much you wiggled the lever to relieve the pressure before you disconected the hoses the pressure will still build up from the heat of the sun or just normal heat of the day in the loader cylinders, hoses, etc. Once you pull the couplers apart you have a sealed system in the loader circuts and cylinders, unless you have a leak the oil gets warm, expands, has no relief except to strech anything that contains it, the hoses mainly. I'd be curious to know just how much pressure buildup there really is in such a situation, likely someone has put a guage a the system to know that, I'd like to know myself. Frank. ....

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____________________________________________________________________________________
Release of Hydraulic Pressure


2008-08-22          156240

I think some are missing the point of the original post.

When you take the FEL off the tractor, you do bleed down all the hydraulics you can and let the FEL settle down as best as is possible. However, it is very common that the FEL will settle further over time while it sits parked, or the ground beneath it settles, this can (and usually does) leave the hydraulics on the FEL under pressure. Since the valve is on the tractor, and the lines are under pressure which makes seating the line in the coupler nearly impossible, you are left with the problem of bleeding off the pressure safely.

Wiggling the control valve only releases pressure on the tractor side, not on the now isolated FEL's hydraulics.

It's a 'Catch 22' situation, you can't connect the FEL to the tractor until you release the pressure, but you can't release the pressure until it IS connected to the tractor.

Exactly the same situation arises, and likely even more often, with B/H's that get removed and put back on regularly.

Best of luck. ....

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Release of Hydraulic Pressure

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8x56mn
Join Date: Aug 2006
Posts: 167 Watkins Glen NY
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2008-08-22          156241

Actualy it's my missunderstanding. In my case the hose dissconnect is at the control valve where your case is downstream from the cylinder, two different issues.:) ....

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Release of Hydraulic Pressure


2008-08-22          156243

So when you disconnect from the FEL the valve stays on the FEL and not the tractor?

That would be a different story, in this case, my machines are the same, the valve is inside the cab or at the operators station and so stays with the tractor.

Best of luck. ....

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Release of Hydraulic Pressure


2008-08-22          156249

Anyone who ever owned or operated a John Deere 3010 or 4010 from back in the 60's has used the best hydraulic couplers ever invented to couple hoses that were under pressure. You pushed the male couplers from the impliment into the female couplers on the tractor, pulled down on a little lever on the side of the coupler housing. That little lever pressed the ball of both the male and female couplers open, worked like a charm. Why they ever abandoned such a good design is beyond me. Frank. ....

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Release of Hydraulic Pressure


2008-08-22          156250

Quote:

Originally Posted by hardwood | view 156249

Why they ever abandoned such a good design is beyond me.



I suspect it was because if the couplers were not clean it would allow debris into the hydraulic system.

Best of luck. ....

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Release of Hydraulic Pressure

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joshusnr
Join Date: Aug 2016
Posts: 2 pennsylvania
TractorPoint Premium Member -- 5 Tractors = Very Frequent Poster

2016-08-19          195672

This works for me on all my machines
Imp. attached or not

1. start the engine if the seat belt being on matters on your machine, put it on also (it must be on)

2. Turn the machine off and remain in the seat (seat belt still on)

3. Turn the key back on into the 1st. position (Not starting the engine)

4 Activate all Hydraulic controls (with the key on and motor not running)

5. Turn the key off, get out of the seat and make or disconnect your imp.

6. If that doesn't work, buy a New Holland

JOSH




....

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Release of Hydraulic Pressure


2016-08-23          195675

Ran into this Saturday on fel as the hoses came lose while using the tractor and the weight of the bucket put load on the hoses. Was not near wrenches but was near excavator. We took the excavator and picked up a little on the bucket and that was the end of the pressure issue. Please note the other hose had already been reinstall. Both were pulled off in working on dirt pile but only the up hose really was any issue. kt ....

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Orangeglow said:

Great info. Not sure which tractor you have, but would you happen to have the link which shows which shim kit you bought, and which shims you added to get you there ?
I,m hoping you have a BX2360, or BX2370. LOL

Click to expand...



D2cat is correct I stated that I have a 2013 bx 2370.. it also shows in my signature what I own.

Here is the kit you will want to use:

Link: https://www.google.com/amp/s/bxpanded.com/pressure-tester?amp=1

This kit will come with all the shims Necessary to properly adjust your hydraulic pressure with your relief valve.

As I stated I think in my first post, my pressure was a 1650psi and it took me .7mm in shims to bump my pressure from 1650 to 1950psi.. yours will vary because not every relief spring is created identical... depending on where you want your pressure to be it may take you .4mm or a .3mm or a .3mm with a .2mm spring to get you to where you wanna be.

For mine I used a .4mm, a .2mm and a .1mm shims to get me there.

First thing you want to do is get a baseline tho, throw the gauge on it and see where you are at, you don’t wanna just be guessing with this stuff. Each shim brings you up 40psi.

It is all very easily understandable in the directions that come with the kit and it will work on nearly all bx series tractors and definitely on your 60 series.


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Sours: https://www.orangetractortalks.com/forums/threads/have-you-increased-the-hydraulic-pressure-of-your-bx-tractor.38039/
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Kubota Increase Hydraulic Pressure Adjustment Shims for Kubota BX B L +25% Power

Kubota Increase Hydraulic Pressure Adjustment Shims for Kubota BX B L +25% Power

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Item #:

HUF12592

This product is not Fulfilled by Ubuy and can take minimum 10 days in delivery. We might cancel the product from the order and refund you if any issue arise with the delivery of this product.

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Product Details

Manufacturergeneric
ASINB08HM8M9LG

Description

Kit includes full color instructions with pictures, plus 3X Genuine Kubota Shims Increase the Hydraulic Pressure of your tractor! Adjustment Kit for Kubota BX, TLB, B and L Series and many other Kubota models.... Does your tractor lack power? Does your Backhoe bog down? Does the scoop strain to lift a bucket of rocks? These adjustment shims will help bump up the pressure and bring back the muscle to your machine. Most models ship with the pressure much lower than spec and dealers rarely check and adjust the hydraulic pressure before delivery. Also, springs and valves naturally wear over time and your pressure may suffer because of this. It is a good idea to check your pressure annually to see if adjustments are needed. This listing is intended for those who already have a pressure gauge, or someone who is going to assemble their own gauge. It is VERY important that you do not exceed the maximum hydraulic P.S.I for your machine (use google to find the number). We typically see about a 25% per increase over factory when these shims are applied correctly. You may need all 3 shims, or just one or two..it all depends on where your tractor is to begin with. The sizes included in the kit are 0.1 0.2 and 0.4 ...We also have kits available with a pressure gauge (see my other listings). We recommend this modification be done by experienced professionals and assume no liability whatsoever for the use of these shims. Instructions are included. NEED THE FULL KIT WITH THE GAUGE?.... Please see my other listings... Thanks for looking!

Customer Questions & Answers

  • Question: Where can I view the installation instructions?

    Answer: We don’t have them posted online, but you remove a large nut on the rear of your tractor, pull it out and the shims slot into the valve assembly... it’s not hard to do at all...
  • Question: Will this work on a Lx3310

    Answer: I don’t think so.. it’s not on the chart
  • Question: What part # do I need for an 06’ bx2230 tractor

    Answer: This kit will work..if you need the hydraulic pressure gauge as well (recommended if you don't already have one), the search for out "poppet" kit for the BX series tractor....
  • Question: Will this work for L3400? I cannot seem to find the chart.

    Answer: Just went to the Kubota site to look up your model and I do not see the same shims listed so I would not get this for your tractor. Botaproduct

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Customer Reviews

Sh•• ••73

September 18, 2021

Great service

I ordered 3 of these kits to pump up the hydrolic pressure on my 2017 B2650 Kubota tractor. They mistakenly only shipped me 1 kit. We contacted seller and they had the additional kits sent to us ASAP. Very pleased with quick response... as far as product... worked perfect.. I used 1 complete kit plus 1 small shim to bring psi up. Thinking I'm going to add a little more. The whole process is really easy. Several videos on YouTube.

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Sours: https://www.ubuy.hu/en/product/DSP2U6G-kubota-increase-hydraulic-pressure-adjustment-shims-for-kubota-bx-b-l-25-power
Why Wont My Tractor Lift Anything?! Is Low Hydraulic Pressure The Issue? #compacttractor

Max hydraulic pressure on L5450

What are you trying to do? I'm guessing that you mean the standard hydraulic system that runs things like the loader and lift arms. Here's some kinda general information from a guy who has designed a few hydraulic systems that will help you to evaluate what advice you get...

In every hydraulic system the maximum hydraulic pressure from the pump is immediately limited by a bypass valve so that it doesn't exceed the standard ratings of control valves, hoses, and fittings. I think that's the number you are looking for.

For machines with industrial type and larger HP engines - roughly those 60 hp and up in tractors- those larger engines are mostly used on machines where weight doesn't matter or is an advantage - machines capable of carrying the weight of larger diameter hydraulic cylinders without penalty. The advantage for them is they are able to generate the same cylinder force at lower hydraulic pressures. Lower pressure means that their valves, hoses, pumps, and seals all last longer because of the lower stresses. Larger tractors as well as big backhoes and crawlers typically run somewhere in the 2000 to 2500 psi range. In all probability your tractor can run in that range as well.

Smaller HP machines are often smaller and lighter constructed with a higher center of gravity and so they have to keep weight down on the cylinders, buckets, and loader arms. They make up for smaller cylinders by running higher hydraulic pressure - typically in the 2500 to 2900 psi range. They aren't as concerned with longivity as they are with developing enough force to do the job.
Luck, rScotty

Sours: https://www.tractorbynet.com/forums/threads/max-hydraulic-pressure-on-l5450.358789/

Pressure kubota hydraulic

Kubota BX Hydraulic Pressure Test & Adjustment Kit

SoldSee similar items$59.95Buy It Nowor Best Offer, FREE Shipping, 30-Day Returns, eBay Money Back Guarantee

Seller:Top-Rated Plus Seller botaproducts✉️(1,283)100%, Location:Asheboro, North Carolina, Ships to: Worldwide, Item:251856239849Kubota BX Hydraulic Pressure Test & Adjustment Kit . Bota Products Asheboro,NC. 27205BX 1870,2350,2360,2370,24,25D except BX22 as noted below Is your BX Tractor Hydraulics up to par?? Bucket not lifting or Backhoe not digging like it should? Maybe you added a grapple and a few extra pounds to the bucket and now it does not lift as much or the hydraulic pressure relief valve spring is getting weak. It may have been set too low right from the factory. Here is a low cost way to check your hydraulic pressure and bring it up to specs or boost it a little to get some more lift & digging capability. The kit comes complete with a high quality liquid filled Grade (A) 3000 lb pressure gauge with female quick coupler complete instructions and an assortment of Genuine Kubota pressure relief valve shims. You should have this in your Kubota tool kit Pressure should be checked at every service interval as the spring tension will change over time and it gets weaker not stronger. ***Not for BX 2200*** All gauges are tested before shipment on a known 2000 PSI source to insure accuracy. Check your manual to see what the hydraulic pressure should be, then you can adjust it as necessary. FREE SHIPPINGCondition:New, All returns accepted:Returns Accepted, Item must be returned within:30 Days, Refund will be given as:Money back or exchange (buyer's choice), Return shipping will be paid by:Buyer, Restocking Fee:No, Return policy details:Unit must not be damaged or taken apart, Brand:Bota Products,Asheboro,NC. 27205, Part Type:Gauge, MPN:BXPR, Type:Gauge, Equipment Type:Test Equipment

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