Ford front driven hydraulic pump

Anybody know what the output is of the front engine mounted hydraulic pumps that bolt to the crank for tractors like the Ford NAA? Also anybody have any ideas on how to plumb it in so I can run a backhoe attachment. I've bought the pump, the attachment needs about 14 GPM at 2500 psi with a 7 gallon resevoir. Main thing that stumps me is the return relief system and how to plumb it. The attachment was set up to plug into remotes on a newer style tractor.

330 Standard........most NAA Ford FEL pumps are 3.5gal and 1700psi. .......Dell

To get that kind of flow, I think you'll be looking at a PTO pump.

Is the relief valve in the pump? What kind of pump do you have? The plumbing for the backhoe will be easy. Are you also operating a front end loader with this? This 14 GPM is at what RPM? More details please.

I have not received the pump yet but it is a factory pump that was made for the older Ford tractors that attached to the front of the crank on the motor. The 14 GPM is just what the Massey dealer told me was the ideal for this 1017 backhoe attachment. I won't be running a loader. The hoe will be all this pump will be supplying.

That's a good sized pump - what do you need the volume for?

Be careful as you will damage the pump/drive shave/tractor enging and/or blow out a hydraulic line if you plumb it wrong.

First - you also need to know what type of hyd control valve you have.

A standard open center system with the pressure relief valve in the control valve is fairly easy.

bottom of the hyd oil tank to the "in" port "suction side" on the of the pump

"out" port or "pressure" side of the pump to the control valve "in" port

"out" port on the hydraulic valves back to the tank.

Before I had a JD 3020 tractor that I had access to and all I did was plug in the 2 remotes and engage the lever that supplied fluid to the remotes. I don't know whether the tractor had a built in relief in the system or not which is why this is all so confusing. Simplest thing would be to buy a tractor with remotes but that is not economically feasible. Now all I have is a Ford Jubilee and a MF1017 backhoe attachment. how would i tell if the control valves for the bucket functions have a built in relief?

Need more info - like what the backhoe is and what type of control valve is on it. I'll assume your pump is a 1.4 cubic-inch-per-revolution? You can't go much bigger since it takes 29 horse to pump 14 GPM at 2500 PSI. That's kind of small for a backhoe but maybe the hoe is small and you can rev up the engine for better speed? Backhoe pumps are usually near twice that size.

Backhoe valve will usually have the relief valve built into it. So, no extra plumbing needed. Your's doesn't? If not, and you're sure it's an open-center valve - maybe it has a port where you can screw one in? If not, you can add one in the line somewhere. That would require an extra return line. Seems odd though if you've got an o


My Ford 4000 which is basically the same size as a 900 has a 2.6 cubic-inch-per-rev pump in front - for use with a hoe and loader. That flows 18 GPM @ 1800 RPM and 27 GPM @ 2500 RPM. My Ford 641 with loader has a front-mounted 1.4 cubic-inch-per-rev pump.

The backhoe is a Massey ferguson 1017 backhoe attachment. It hooks right up to the 3 point on any tractor just like all other three point attachments. This is a small hoe about the size of what you see them using at cemetaries. I have no manuals so i am going off what a Massey dealer told me. The tractor I plan to use is a Ford Jubilee. I don't plan on doing heavy duty work but it would be nice to have to use again when you need to dig a hole or a ditch.

Do you already have a loader on it??? If not you will want one or you will find you will have problems. I have a 8N with a back hoe and even with a loader up front it will pop wheelies all day long. As for the pumps the common ones that I have are around 7-8 GPM at 2500psi. I have 2 tractor set up with that type of pump system and both have the same type and brand of pump on them

OK, it's a small one. Kind of like used on compact tractors. I've seen them on Japanese MFs with 5- 7 GPM pumps. A 14 GPM pump is probably just right and will work well enough at low engine speeds.

If it was special built to be used with MF tractors e.g. 1030, 1040, etc., I suppose it relies on the tractor's relief valve and integral pump system. Since you want to install on your Ford, you are building a separate dedicated hydraulic system. If that backhoe control valve has NO relief valve - you have to add one somewhere. I assume your new pump doesn't have it either? If not, you'll have to add an in-line relief valve and tee it into the return line, OR back to the hydraulic tank. You can buy an adjustable in-line relief valve for $25-$40. Just make sure it's rated for the same flow you pump can make.

http://www.surpluscenter.com/item.asp?item=9-6135-50-L&catname=hydraulic

I think you are exactly The pump I bought came off a Ford tractor probably a Jubilee/NAA/600. So far everybody says it is a 7-8 GPM pump. Is that going to be sufficient for this unit? Anyway you could send me a sketch of what your talking about with regards to the plumbing? Is this correct 1. Pump outlet to hoe with relief in between and discharge of relief tied to return to the hydraulic tank line from the hoe. How close does the relief need to be rated? Can i buy one for up to say 20 GPM and where do you set it to relieve at as far as pressure. I really need to find out what these pumps put out.

i have a mf-165 with a freeman 4000 loader that runs off the front pump.had it repaired once at the local hydraulic shop they said it was a 18 to 20 gpm pump everything works at fast speed.

Take a look at the control valve. If it has a relief it will be close to the inlet port. Also this 14 GPM, is that what the actual flow needs to be? Remember pumps are rated on theoretical flow. Also you need a relief but that does not mean that you will always be seeing 2500 PSI. I also sent you an e-mail let me know if you receive it or not. The old rule of thumb is it takes 1 horsepower for each gallon of pump output at 1500 PSI. Also most gear pumps are more effecient at 1200 RPM or faster.

The relief valve cannot be rated for less GPM then your pump can make. It can't be too big, but you don't want it too small.

The best pump size is determined by how big the cylinders are on the hoe. Small cylinders need less oil to fill them up. It also has to do with what kind of engine speed you want to hear when using the hoe. Backhoes usually have big pumps so you can run the engine fairly slow and still get decent speed from the hoe functions. So, a hoe might have a 28 GPM pump (at 3000 RPM) but only gets run at 1500 RPM when the pump is only making 14 GPM.

Are you 100% sure the backhoe you have is made for an open-center hydraulic system? If it's made for a closed-center tractor - it won't work.

I'm also wondering . . .if you plan on mounting this pump in front (run off the crank-pulley) . . how are you going to prevent blowing it to pieces when you remove this three-point backhoe? Front pump will be turning all the time and the oil needs to flow freely. Yes you could have guick disconnects and when the hoe was off -you could plug them together.

Much simpler - if this is a part-time use hoe that will be going on and off - to have a PTO pump. The pump would be permanently connected to the backhoe. When the hoe comes off the tractor - so does the pump. A Prince # HC-PTO-9A or a # HC-PTO-7A would be the correct size for your tractor.