Loader plumbing

[J_J]

That dawned on me also that would bypass the filter this weekend thinking about how I am going to do mine for sure so the sump return is the best way.

I agree since basically most of the oil could be bypassing the filter thru the loader valve and right back in the inlet of the pump except when the loader valve is being operated.

I am wondering if there is some sort of slight restriction by going thru the 3pt the way these that are plumbed in series meaning it isn't a straight thru arrangement?

If there is that would most certainly could explain why there are some slow loaders out here.

I have a buddy that has a 2420D and his VN loader is plumbed with a bypass going into the sump and not in series with the 3pt. So I know for a fact not every single loader out there is plumbed in series fwtw some body somewhere is looking at this differently besides a few of us. My other friend that just bought a VN 1610D has a VN loader and I am not sure how its plumbed but I will be looking the first chance I get.

A slow loader is basically due to low volume.

There are valves with regen to speed up hyd flow. Have you seen a bucket with regen dump? Very fast.

Just about all return ports should go to the tank/reservoir. You can run a hose for each valve or tee several hoses together.

Open center valves pressure flow have to be connected in series unless you use something like priority valves to divide the flow, and then each flow has it's own path, but that path could have one valve or multiple valves, but must be connected in series to the tank.

 

[Car Doc]

If you have a valve with PB as the last valve, you could plug the PB port, and use the OUT port to tank, or plug the out port and use the PB sleeve to pass on the fluid.

Yes I do and this is how I plan on doing mine with the OUT going back into the top of the trans case/sump which is our "tank" right now the OUT is ran to the 3pt.

 

[Car Doc]

Just for further conversation on some differences in our machines and for posterity. I am posting pics of my 3pt block and like I said these ports may be the correct way to plumb an auxiliary attachment?

It may have the return built in the block to dump into the trans case I have no idea so anybody have an idea please feel free to say it.

Found the answer if anyone else has this same 3pt valve! :thumbsup:

I was looking in my 336 manual for a pressure test port the procedure and specs etc and on page 270-10-11 and 270-15-2 found the auxiliary valve for loader and how it works etc.

The lower port is pres out and the upper port is in return. I clamped a clear plastic hose into the fittings to verify it flowed and which direction and it does.

I did try raising the 3pt (it was down doing the flows test) and noticed the hose swelling so I quit that yikes.

So am hoping the 3pt will not need to be clear down for the aux valve to work for rear remotes. I plan on running my splitter on those ports as long as there is enough pressure to do the job and want to be able to raise it to where it doesn't kill my back time will tell on that.

 

[project_X]

Found the answer if anyone else has this same 3pt valve! :thumbsup:

I was looking in my 336 manual for a pressure test port the procedure and specs etc and on page 270-10-11 and 270-15-2 found the auxiliary valve for loader and how it works etc.

The lower port is pres out and the upper port is in return. I clamped a clear plastic hose into the fittings to verify it flowed and which direction and it does.

I did try raising the 3pt (it was down doing the flows test) and noticed the hose swelling so I quit that yikes.

So am hoping the 3pt will not need to be clear down for the aux valve to work for rear remotes. I plan on running my splitter on those ports as long as there is enough pressure to do the job and want to be able to raise it to where it doesn't kill my back time will tell on that.

Here is my thread on attaching rear remotes to my 1602D.
I still have the loader plumbed like the instructions on Hoye, but am going to put the PB and replumb in the fall. Your block is likely similar to mine.

 

[Scotty Dive]

I want to ask a question to see if this is normal. I have a Vtek loader that I believe it cut into the pressure line - like most have posted here. I do not have any curl upward or downward pressure when my 3 pt hitch raise lever is in the all the way up position. Normal? Anything I can do to remedy this? I looked breifly at my loader valve and do not see any markings of a PBY port - and for what its worth I can't seem to locate a manufacturer - but that might be hidden under the miuting bracket.

 

[J_J]

If your FEL is the first valve in series, then it will use whatever hyd is available.

Do you have PB?

If you don't have PB, and are using the tank port to feed the 3pt, when you raise the 3pt lever up , you are pressurizing the total hyd system and the tank port on the FEL valve is seeing the 3pt relief pressure. The cyl fluid has no place to go.

Does you lift cyls work?

Your 3pt valve should not be in the max up position, but slightly down in neutral. In the max up position, you are causing the fluid to be relieved.

If you tee a gage in the IN port of the FEL, you can monitor the hyd system pressure, when any of the valves are operated.

How many hoses are on the loader valve? If it is 7, you have PB.

If you only have 6 hoses, then you are using the tank port for the hyd flow path.

 

[deepNdirt]

For anyone needing to have a visual on a what the PB adapter looks like here is the one on my control, and the 7 lines JJ speak of,

 

[winston1]

Sounds like your 3 point is trying to lift higher even though it is at the top. Does your pump sound loaded when the handle is all the way in the lift position. If so, your feedback linkage may need a little adjustment. May not be the problem at all. Just thinking out loud. :thumbsup:

 

[Scotty Dive]

I think you might be right that when my 3 pt is all the way up the valve is loaded....So thats good news that I can adjust that.

Here is a picture of my loader valve....I am a novice with hydraulics. What does this valve tell you guys?

 

[kenmac]

can't really tell. But, that might be PBY where that plug is now. If you have them, The instructions for the valve should state if it has PBY

 

[Scotty Dive]

I will have to look to see if there are any manufacturer markings. I don't have any instructions

 

[kenmac]

I will have to look to see if there are any manufacturer markings.

You will have to contact manufacture for the for the part to convert it to PB if , that's where the sleeve goes & probably any instructions / spec sheet for the valve would be great

 

[Scotty Dive]

anyone recognize what manufacturer this is?

 

[deepNdirt]

Not sure, Looks like perhaps a marking meaning open /close circuit, Have you tried looking under the lever boot for a manufactures name? I don't suppose there is a metal tag riveted to it somewhere?/ Like mine has

 

[kenmac]

Did the valve come on the tractor ? did you purchase the valve ?

 

[Car Doc]

I just got my pb sleeve from Koyker so I will be re-plumbing the loader and my soon to be newly installed rear remotes. :thumbsup:

I am in the process of converting my splitter over to 3pt and am using the tractor hydraulics on it so far and my 3pt block has the in and out ports I posted the pics of earlier.

I plan on only using the pressure out and return both the loader and the remotes to the top plate on the trans case like kenmac did his as long as the 3pt block doesn't have some modification that would not allow me to plug one port off time will tell on that.

I dont want to return the remotes thru the 3 pt block either like the loader is is my reasoning on that. Right now its working returning thru the block but it kicks the 3pt every time I operate the splitter so I dont know whats up with that something isn't jiving.

 

[deepNdirt]

Not sure, Looks like perhaps a marking meaning open /close circuit,

....Scotty Dive....
I feel like such an idiot:ashamed: I got to looking through some notes I had made back when I installed my loader and found I have the same name manufacture as indicated on your control valve,
The "blb" stands for Blb hydraulic - Products - Catalog - BM40 I have the BM40
perhaps now you can ID your control valve and find out it's specs,

 

[Scotty Dive]

Thanks...I found out that too, except I didn't know the model number. I asked the US distributor for some info like if it has a PBY and float? I will share what I find. Do you have a manual?

 

[kenmac]

Thanks...I found out that too, except I didn't know the model number. I asked the US distributor for some info like if it has a PBY and float? I will share what I find. Do you have a manual?

Looking at the diagram. It does show PBY ( High Pressure Carry over) for the BM series valve

http://www.blbhydraulic.it/bmseries.html

 

[Scotty Dive]

So....first let me say I am just gathering info at this time but at some point would like to add remote hydraulics so I can run a log splitter.

The valve I have is a BLB from Italy and is a BM 40 which does have the option to add a PBY sleeve. This runs about $15.
Here is a link to the BLB website: Blb hydraulic - Products - Catalog - BM40

Now - my loader valve is plumbed from the pump directly and back to the return - see the pictures:

Now my 3pt looks like this and has a hose that loops back on itself:

I mentioned in an earlier post that I am not getting any strength when trying to curl the loader when the 3 pt is in the up position. I have not tried to adjust that yet but is my loader etc plumbed correctly?

And....so if I wanted to add rear remotes, what would be the best way?