|
The internal pump is only 3.6 gpm. It runs some more pressure than some systems with greater flow so it makes pretty good motion but its boring if the auxiliary cylinder is more than 3x8. It runs a maximum pressure according to my manual of 2800 psi so it will lift using a smaller cylinder what a 2200 psi system will on a 3" cylinder. 2200 psi on a 3" cylinder pushes 15,551 pounds. A 2-5/8" cylinder pushes 15,153 pounds with 2800 psi and for the same volume of oil the smaller cylinder moves 30% faster. A 2.5" cylinder would be 44% faster but only push 13,744 pounds at 2800 psi. The pump is controlled by the original levers with feedback from the three point on position and on drag of the plow (what the draft control is used for). It needs to be more in the constant draft position to use the auxiliary. The external auxiliary valves don't shut off that original position and draft lever control of the pump. Probably don't have to lift the position control much to keep it pumping, but may need to lift it a little from where its setting the position of the three point when the oil is going to the three point. That way, its kind of a cobble, ripping oil pressure from the built in hydraulic control system without overriding the controls. Its not really hard to mount a pump to run off the PTO or the crankshaft, though then you need a reseervoir, a filter, and another valve or two. My loader was run that way. Gerald J.
|
