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.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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