Senior GTT Super Slacker
Does anyone recall or know what the hydraulic pump flow rate is on the JD 650 tractor?
Thanks JD, but now it's just about clear as mud why I seem to perceive the issue I have noted.The JD 650 has a 7 cc pump with a flow rate of 3 gpm. The 750 has a 9 cc pump with a flow rate of 4 gpm. Kenny is a pretty good guesser.
Not at all, it has to due with the way the valve is ported internally in reality. But I suspect the "problem" here has more to due with linkage geometry than anything else.Isn't that due to an open-center hydraulic system?:think:
SERIES TYPE: A multiple spool valve in which the return oil from the first spool is directed to the inlet of the second spool (and from the second to the third, etc.). This type valve permits simultaneous operation of two or more functions with the same oil flow. However, the total pressure requirements of all functions are accumulative.
PARALLEL TYPE: A multiple spool valve in which the inlet oil is connected to all spools simultaneously. If more than one spool is actuated, the function requiring the lowest pressure will operate first
Yea, ok. I would not know an Open-center hydraulic system if it walked up and slapped me in the face.
Keith, you know I NEVER mind helping...even you!* I just would rather do it in on the DT site to keep activity up.
Are you sure the orifice is on the dump/curl circuit?* It was my understanding that it was supposed to be on the lift/lower circuit to prevent the loader from falling to fast-especially when the joystick was pushed into float mode.* I researched this years ago (before the 200 series loader) and that is what I remember.* Can you verify where it's at on yours?
Ken, of course I know this!! But... I would have never given it a thought, glad you mentioned it. Guess there is a reason I'm a dumbass but figure no sense being one if I can't show it from time to time. Good one, thanks.Since your loader is off now for the winter, be sure it's blocked up before you take any fitting loose or it may move and squirt oil everywhere-you probably know that but I just thought I would mention it anyway to be sure.
I got the DTAC off of TBN. I am pretty sure I understand the Regen but taking the orifice out may make the Regen that much faster, we'll see.Now that you posted that DTAC, I do remember hearing about that on TBN many moons ago...if it's (a orifice on the curl line) in there I say take it out. If you understand how the regen function works then it's not needed IMHO.