Adding a spool valve

[thebuildist]

d. As part of the loader detachment process, dial the flow knob to "10", which will give all the flow back to the TCV, none to the loader valve, just like the factory configuration.

Ahm, why complicate yourself. This only applies if you keep the existing pump, which, when you split it's flow, you won't have enough for travel. Given the seriousness of this project it would feel like such a cut corner to stay with a pump which is not adequate.

With a pump that can supply adequate pressure and flow to both loader and the other side of the hydraulic system you would not need to change the dial ever. When you disconnect the loader the fluid flows through the loader valve and returns to the tank just fine.


But I think I haven't paid enough attention to your design. How do you plan on disconnecting the hydraulics of the loader, when you want to take it off? All those hoses...

Excellent points, excellent questions. I'm REALLY trying to keep the cost of this project in hand. So far I've spent less than $1000, and I thought I was done spending. So having to go buy a new two-section pump will hurt. But if I have to, I have to.

As far as the disconnect goes, I'm more-or-less copying commercial designs. I'll have a bank of 4 disconnects somewhere near the righthand footrest. Each of the four hoses will be split somewhere on down the line to feed the same funtion of both the left and right side cylinders. One hose for boom up, one for boom down, one for bucket curl up, one for bucket curl down.

I'm HOPING I don't have to use proportional metering valves to keep the cylinders in sync. I'm HOPING they'll just stay in sync of their own accord. But they may not, and if they don't then that's even more money I'll have to spend. We'll see about that too, when the time comes.

[Eugen]

Understandably the two stage pump is either very expensive (new) or hard to find. I would listen really carefully to what @DavidBarkey says because of us all here he is the only one who actually built a loader on a 400 series tractor and it withstood the test of time. After I wrote my reply I realized that I forgot to mention that obviously the two stage pump is longer and the space behind the pump is small. Like he said, a 12-14 GPM single stage pump should not be more than $200 in , you guys have so many more options than us. Think about this project, you're building it for many years of use. Spread the $200 over that many years, and think of the aggravation you'll have for all that time with a tractor that almost works well.

Regarding the proportional metering valves. Again, I would ask myself if the 600 series tractors have this. They have been working well for over 40 years, so if they work without, why shouldn't yours too? @DavidBarkey do you have something like that?

[DavidBarkey]

Understandably the two stage pump is either very expensive (new) or hard to find. I would listen really carefully to what @DavidBarkey says because of us all here he is the only one who actually built a loader on a 400 series tractor and it withstood the test of time. After I wrote my reply I realized that I forgot to mention that obviously the two stage pump is longer and the space behind the pump is small. Like he said, a 12-14 GPM single stage pump should not be more than $200 in , you guys have so many more options than us. Think about this project, you're building it for many years of use. Spread the $200 over that many years, and think of the aggravation you'll have for all that time with a tractor that almost works well.

Regarding the proportional metering valves. Again, I would ask myself if the 600 series tractors have this. They have been working well for over 40 years, so if they work without, why shouldn't yours too? @DavidBarkey do you have something like that?

Frankie has a pressure compensated fixed valve . A adjustable one would be handy when running the tiller on the thing as I could then put a little more flow to the tiller (pto valve ) , don't need much ground speed then . And when moving around the yard being able to put a little more to the drive motor would increase speed a little . Do to it's weight I very seldom am able to use high gear . So for his an adding an adjustable flow control valve would be good idea . BUt it would need to be easily adjusted .

Dave

[Timj]

Thinking out loud here,. The 600s ran the same hydraulic pump as the 400s. They ran through the tcv with power beyond to the loader. Obviously it works based on the popularity of them. So maybe the right tcv is the answer?

[Eugen]

@Timj but he has power steering too. I'm asking myself, why didn't they use the same pump on the 6018?

[Eugen]

@DavidBarkey do I want to know what a "pleasure compensated fixed valve" is?!?

[DavidBarkey]

@DavidBarkey do I want to know what a "pleasure compensated fixed valve" is?!?

Pressure , you know that thing you suffer when you haven't had pleasure for a while . I did have to look and see if I spelled it wrong .

Dave

[Timj]

@Timj but he has power steering too. I'm asking myself, why didn't they use the same pump on the 6018?

His tractor has a larger 11.25gpm pump with the diverter valve breaking off a couple of gpm for the steering.

I would have to be thinking they did it for the steering and increased performance.

I have never ran one of the Case Ingersoll loaders, so I don't know how they compare to larger ones.

[Eugen]

Pressure , you know that thing you suffer when you haven't had pleasure for a while . I did have to look and see if I spelled it wrong .

Dave

haha, that was just me attempting a little light fun! a little smile in the middle of the day that's all!

[Eugen]

His tractor has a larger 11.25gpm pump with the diverter valve breaking off a couple of gpm for the steering.

I would have to be thinking they did it for the steering and increased performance.

I have never ran one of the Case Ingersoll loaders, so I don't know how they compare to larger ones.

ooooh! well then, @thebuildist you should be just fine with what you have!!! I think @Timj just solved it for you! If I were you I'd just connect it all with that you have already, most likely it'll work just fine.