napabavarian
Silver Member
I already have the rear remotes, but chose to not pay Kubota extra for their name on the cylinders, I just need new cylinders and hoses, no extra valving.
Where is the best place to order top and side link cylinders?
- Thread starter napabavarian
- Start date
- Views: 3410
3RRL
Super Member
- Joined
- Oct 20, 2005
- Messages
- 6,931
- Tractor
- 55HP 4WD KAMA 554 and 4 x 4 Jinma 284
You can go here and get them from CCM.
CCM TNT Systems
They have the double pilot operated check valves hard plumbed on them. A plus IMHO.
Or you can go here to buy and make your own. Go to the hydraulic cylinders for the size and lengths you need for your machine.
Surplus Center
You can get all the hoses and fittings there too.
CCM TNT Systems
They have the double pilot operated check valves hard plumbed on them. A plus IMHO.
Or you can go here to buy and make your own. Go to the hydraulic cylinders for the size and lengths you need for your machine.
Surplus Center
You can get all the hoses and fittings there too.
IXLR8
Veteran Member
Warning hydraulic/tractor newbie here...3RRL said:
What is a double pilot operated check valve and why would it be a plus? I am reading the forums and trying to learn as much about tractor hydraulics as I can. I am getting a 6 way rear blade and I want to add 'top' and 'angle' on the blade and I am trying to sort out the best way to get it done. The tractor I am getting has 2 rear remotes.
B8FISH
Gold Member
well--don't consider this a real answer--but I believe that the DPCValves are meant to stop the cylinders from leaking down while operating--essentialy locking them in place until the operator uses the hydraulics to change them.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 51,575
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
A pilot operated check valve is simply a check valve that is hyd activated... For example.. manlift hyds used pilot operated check valves on the cyl's so that if a hose blows.. you don't plummet to the ground suddenly.
soundguy
soundguy
3RRL
Super Member
- Joined
- Oct 20, 2005
- Messages
- 6,931
- Tractor
- 55HP 4WD KAMA 554 and 4 x 4 Jinma 284
Those guys are correct.
The DPOCV locks the cylinder in the position chosen. It is a plus in situations like when you set the side tilt cylinder a certain way, you don't want it to leak down, out of that set position. Same thing with the top link. Lots of time the valve controlling the cylinder does the leaking down. If the DPOCV is mounted on the cylinder, then it takes the valve seepage out of play. Now if the cylinder itself is bad and leaks, then you could get leakdown because of that. But generally if your cylinders are working good with ample power, then they are probably good with minimal leak in them.
Examples are like when I use my box blade to grade my dirt road smooth, I find the perfect setting for the top link and I don't want it to move while dragging the 1/2 mile road. If the cylinder moves position, I would constantly need to adjust it back to get the desired smooth finish, or it might start cutting/digging into the road or something. Same with the side tilt cylinder(s) If I want to set my implement with a certain tilt to it, I want it to stay that way until I move it.
Drawback is you can't have a valve with a "float" in it, because your cylinder is locked until it's moved by your hydraulic valve. And that is not to say the cylinder will "never" move either. Most of those DPOCV have a "cracking pressure" where they will move if the force against the cylinder exceeds the cracking pressure. The ones I've seen is normally 1/3 or 1/4 of the hydraulic system it's rated for. In other words, if the check valves are set for 2400psi, they won't move unless more than 600psi to 800psi is exerted on them...depending.
Another example with my backhoe stabilizer legs. They were leaking down and I had to reset them down to hold the hoe steady. Not a big deal, but it got annoying to me. So I added DPOCV's to each cylinder and now it doesn't leak down anymore. Also, an advantaged of having the DPOCV mounted via hard lines to the cylinder is that the hoses are connected to the check valve itself. So if a hose blows, the cylinder remains locked via the check valve. If you connect the check valve to the cylinder via hoses, and those hoses blow, the cylinder would move.
The DPOCV locks the cylinder in the position chosen. It is a plus in situations like when you set the side tilt cylinder a certain way, you don't want it to leak down, out of that set position. Same thing with the top link. Lots of time the valve controlling the cylinder does the leaking down. If the DPOCV is mounted on the cylinder, then it takes the valve seepage out of play. Now if the cylinder itself is bad and leaks, then you could get leakdown because of that. But generally if your cylinders are working good with ample power, then they are probably good with minimal leak in them.
Examples are like when I use my box blade to grade my dirt road smooth, I find the perfect setting for the top link and I don't want it to move while dragging the 1/2 mile road. If the cylinder moves position, I would constantly need to adjust it back to get the desired smooth finish, or it might start cutting/digging into the road or something. Same with the side tilt cylinder(s) If I want to set my implement with a certain tilt to it, I want it to stay that way until I move it.
Drawback is you can't have a valve with a "float" in it, because your cylinder is locked until it's moved by your hydraulic valve. And that is not to say the cylinder will "never" move either. Most of those DPOCV have a "cracking pressure" where they will move if the force against the cylinder exceeds the cracking pressure. The ones I've seen is normally 1/3 or 1/4 of the hydraulic system it's rated for. In other words, if the check valves are set for 2400psi, they won't move unless more than 600psi to 800psi is exerted on them...depending.
Another example with my backhoe stabilizer legs. They were leaking down and I had to reset them down to hold the hoe steady. Not a big deal, but it got annoying to me. So I added DPOCV's to each cylinder and now it doesn't leak down anymore. Also, an advantaged of having the DPOCV mounted via hard lines to the cylinder is that the hoses are connected to the check valve itself. So if a hose blows, the cylinder remains locked via the check valve. If you connect the check valve to the cylinder via hoses, and those hoses blow, the cylinder would move.
IXLR8
Veteran Member
Didn't mean to hijack this thread... thank you all for the information and clarification on the DPOCV cylinders. Looks like there will be a call to CCM soon. 
RancherSam
Silver Member
does anyone know if the CCM cylinders are double acting or single. would likely be double but want to know for sure.
kennyd
Advertiser
They are double acting.RancherSam said:
dfkrug
Super Member
- Joined
- Feb 3, 2004
- Messages
- 7,582
- Location
- Santa Cruz Mtns, CA
- Tractor
- 05 Kioti CK30HST w/ Prairie Dog backhoe, XN08 mini-X
I was recently at the local Kubota dealer and I was admiring the new
TnT they had made up for a customer's new BX24. It did not have DPOCVs
so I casually asked the mechanic if they ever got customer requests for
these valves. He had no idea what DPOCVs were and when I explained, he
was adamant about there being no need. So much for "experts". I do
not use DPOCVs myself, but clearly they are very valuable in certain uses.
Anyway, here is a TnT setup I made for a JD. The 2 cyls are new, from
SurplusCntr ($55). One is 2x8, and one I shortened up to 2x6. I prefer
welded cyls here as there are no tie-rods to gather debris. I did have to
weld on swivel eyes....SurpCnter also has ready-made cyls with eyes.
TnT they had made up for a customer's new BX24. It did not have DPOCVs
so I casually asked the mechanic if they ever got customer requests for
these valves. He had no idea what DPOCVs were and when I explained, he
was adamant about there being no need. So much for "experts". I do
not use DPOCVs myself, but clearly they are very valuable in certain uses.
Anyway, here is a TnT setup I made for a JD. The 2 cyls are new, from
SurplusCntr ($55). One is 2x8, and one I shortened up to 2x6. I prefer
welded cyls here as there are no tie-rods to gather debris. I did have to
weld on swivel eyes....SurpCnter also has ready-made cyls with eyes.
