BH Bucket cylinder pressure??
- Thread starter wddot
- Start date
Re: Bucket cylinder pressure??
That's tuff to answer, but if your searching for a replacement then you probably want to be looking for a 3000psi minimum one.
That's tuff to answer, but if your searching for a replacement then you probably want to be looking for a 3000psi minimum one.
Re: Bucket cylinder pressure??
Grab your service manual and read up on it. Hint: it has a safety valve built into the circuit to relieve pressure.
Grab your service manual and read up on it. Hint: it has a safety valve built into the circuit to relieve pressure.
Re: Bucket cylinder pressure??
Thanks. I'm trying to check how much pressure I've got going to that particular cylinder which keeps bending
Thanks. I'm trying to check how much pressure I've got going to that particular cylinder which keeps bending
Re: Bucket cylinder pressure??
Likely around 2,200 psi.
Dave
Tell us the tractor the hoe is on as its hydraulic system will determine the max pressure.
Likely around 2,200 psi.
Dave
I do not have a WSM for your specific model but I checked the system pressure of 10 L series tractors very similar to yours. All have 2,560 psi as the listed system pressure.
I found an owner's Manual for your specific model. It lists the system pressure as 17.7 mega pascales which converts to 2,567 psi.
https://www.manualslib.com/download/926371/Kubota-L3240.html
It is unusual for a cylinder to bend unless subjected to forces originating outside the cylinder such as a thumb or if it is not free to pivot at each end and thus bending forces are applied to it.
Could you post a couple of photos of the bucket area of your hoe
Dave
I found an owner's Manual for your specific model. It lists the system pressure as 17.7 mega pascales which converts to 2,567 psi.
https://www.manualslib.com/download/926371/Kubota-L3240.html
It is unusual for a cylinder to bend unless subjected to forces originating outside the cylinder such as a thumb or if it is not free to pivot at each end and thus bending forces are applied to it.
Could you post a couple of photos of the bucket area of your hoe
Dave
Thanks Dave this is the 3rd time in less than 20 minutes of operation. I had a 2in stop installed in the cylinder the last time I had it straightened but it didn't help. I'm trying to remove red tip bushes not oak trees. Very disappointed any advice would be greatly appreciated
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Look at my marked up photo. Why is the paint worn off in this area?
Buy a 0-3,000 psi hydraulic pressure gauge for about $30.
Remove the upper hose from the bucket cylinder and connect directly to the gauge. No Tee needed.
Engine at max rev's. Send pressure to gauge and read immediately then release pressure so your system is not continuing to discharge through relief valve.
Dave
Buy a 0-3,000 psi hydraulic pressure gauge for about $30.
Remove the upper hose from the bucket cylinder and connect directly to the gauge. No Tee needed.
Engine at max rev's. Send pressure to gauge and read immediately then release pressure so your system is not continuing to discharge through relief valve.
Dave
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I sanded the paint off so I could read the numbers. I just checked the pressure thanks. It read between 2500 to 2575psi The relief valve is working so I'm thinking the Ram's diameter is just to small.
In your other thread on this subject, someone mentioned this being a known problem with that backhoe, and recommended you do a search at TBN to find out the details.
Did you bother to take this advice?
If you do you may find out what you need to know.
Did you bother to take this advice?
If you do you may find out what you need to know.
That was the general consensus and why Kubota upgraded the rod size to correct the issue.
I looked on TBN and did not/could not find anything relevant.
If you are aware of a relevant thread please post a link.
Dave
See if this search link works...pages of threads after the adds!!!!
https://www.tractorbynet.com/search/?q=bh75 bent cylinder
Why is some just can't figure to how to use a search function?
https://www.tractorbynet.com/search/?q=bh75 bent cylinder
Why is some just can't figure to how to use a search function?
Last edited:
No necessarily. This was a real problem for Kubota, many were replaced under warranty.
ThanksSee if this search link works...pages of threads after the adds!!!!
https://www.tractorbynet.com/search/?q=bh75 bent cylinder
Why is some just can't figure to how to use a search function?
Dave
In case you did not find it with the search offered by Kennyd4110, I think this is the thread I was remembering:
https://www.tractorbynet.com/forums...ing/55095-bh75-piston-broke-twice-design.html
shootem604
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Lifetime Member
Equipment
L245DT with Kubota (Arps Model 22) FEL and Kubota B/L4520B (Woods 650) BH
The OEM replacement/upgrade is also much more expensive than most hydraulic shops. As I mentioned to the OP earlier, I had this issue on my BH and had custom made IH-CP rods made locally to replace the OEM CPO rods. Cost was 50% of OEM, and the result/solution was superior. The OP is flogging a dead horse.