Plenty of pumps in that range.
Here's an example and source of pumps and info.
www.surpluscenter.com/Hydraulics/Hydraul...19A9H2L-9-7125-D.axd

Or maybe a little smaller..
www.surpluscenter.com/Hydraulics/Hydraul...YD-PUMP-9-1788-A.axd

Are you planning to use a Cat tilt cylinder, typical 1,000psi ?

OM. now that we know I had the pump originally and gave it to Mike I still don't know where it came from. The pump's data plate is about half gone but it is a HYDRECO Model 1515MC3512 Serial Number CEMO 15010. The HYDRECO web site shows this to be an 18 GPM @2600 RPM 2000 psi max pump max rpm 2800. A top of he line pump which I think is more than adequate to run a tilt cylinder. The web site gives a lot of information about the pump.

Paso Bob I don't know where you are looking for a pump but I have done a lot of business with the Surplus Center from Lincoln NE that OM is referring to. I have several of their pumps on different equipment. If I were doing what you are doing I would order the SP 20 Gear Pump, pump number 9-1788B Which is a 7.93 GPM @ 2000 RPM CW rotation with a 5/8 inch X 1 1/4 keyed shaft with SAE12 inlet and SAE 10 outlet side ports at a price of $198.75 This is from Catalog 288 -2015 Edition

bboaz,
I would agree with your recommendation to Paso Bob or something close to it.

I also think the Hydreco pump for the 2U is on the higher then necessary flow size.

Both tractors have the same drive gear ratios although the installation configuration is a little different.

I would also recommend that neither one should exceed 1000 psi operating pressure when using the generator drive. Doubling the pressure doubles the hp required to drive the pump.

OM, I found and purchased a tilt cylinder from a 46A which I will install after I get the pump set up complete. Brian, thanks for the specific info for a new pump. Hopefully it will max out at 1,000 PSI. I'm not sure what SAE 10 and SAE 12 mean??? I was hoping for 1/2" pipe fittings on the pressure side and maybe 3/4" on the return side.

Hi Bob
You will have to install a relief valve in the hydraulic system to limit to the 1000 psi. The SAE designations for size are in 1/16" increments.
SAE 10 would be 5/8", 12 would be 3/4" etc.

[QUOTE=Old Magnet;1

I would also recommend that neither one should exceed 1000 psi operating pressure when using the generator drive. Doubling the pressure doubles the hp required to drive the pump.[/QUOTE]

Thanks for the good info OM.

Using this web calculator it says 1,000 psi at 10 gpm requires 5.8 HP. I would also think the amount of hose the fluid has travel through would require more HP.

www.calcunation.com/calculators/machiner...aulic-horsepower.php

Hey Bakersfield Mike,

Warning about using this set up!!! If a hose breaks it will create...an Oil Slick!!!
Hahaha... Dust Control..... Are you sure that the No Go can handle the extra HP required???

Actually... I think this thread is good education for me.. Thanks guys.

Is the HP used all the time? When oil bypasses is the hp needed reduced and only reach that required power while tilting or using the hydraulics?

"Oil wrote:

Thanks for the good info OM.

Using this web calculator it says 1,000 psi at 10 gpm requires 5.8 HP. I would also think the amount of hose the fluid has travel through would require more HP.

www.calcunation.com/calculators/machiner...aulic-horsepower.php

Pressure drop through the hose isn't going to be an issue, just don't go to small on the hose size.

Paso Bob,
When you go to purchase your control valve just select one that has the adjustable relief valve built in and covers the 1000 psi range.

Yes, the hp is only used when you are actually pumping against a load. Under open circuit mode your just pumping against line fluid loses and hopefully a return line filter. (minimal)

I took off the 18 gpm pump Boaz gave me and bought a cheap 4 gpm pump at 3,600rpm. With the pump turning 2.22 of the engine speed it should be pumping about 2.9 gpm at 1,200 rpm and less when pushing dirt.

This smaller pump should make everything easier because mobile equipment pumps call for 2x the rate oil tank. No place to mount a 40 gallon tank. Now I can run a smaller tank, smaller lines, less money to rig it all up.

Any pics of how cat does the foot tilt control pedal?