From about 1961 to 1964 I owned a 1941 B with a front loader I bought from an old mechanic who worked at the IHC dealer He had modified the valve body so that the hydraulic fluid fed out of the power lift to an external open center spool valve assembly to run the loader cylinders.
I can remember that he had removed the foot petals on the lift and the cam that operated the spool inside of the JD power lift valve body. There was a fill plug (If I remember correctly) that was directly above the JD valve piston or spool he had made a spacer rod that held the valve body down when it was placed under the filler plug and the plug was tightened down.
The rock shaft was not usable but you could operate 1 remote cylinder or 1 set of remote cylinders from each spool on the external valve.
Here again I believe with the JD valve control piston in the up position the oil bypassed and went back into the return cavity, when the cam pushed the valve piston down it blocked the bypass and the fluid was directed to the piston that operated the rockshaft.
I haven’t been able to find a hydraulic print on the old John Deere’s so I can’t be certain about the hookup, I remember that a hose came from the Power lift casing and went to the pressure port on the external valve whether he had drilled the casing to add a ½” pipe threaded port drilled into a passage or whether he had used and existing pipe port is what I cannot remember.
I also remember that the operation of 2 approximately 3” cylinders on the loader was slow so I think you are dealing with a fairly low volume pump in the older JD’s.
Maybe some of the JD guys can address this that is the only JD I ever owned and that has been nearly 50 years ago so that is all I can recall about the setup.
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Today's Featured Article - Usin Your Implements: Bucket Loader - by Curtis Von Fange. Introduction: Dad was raised during the depression years of the thirties. As a kid he worked part time on a farm in Kansas doing many of the manual chores. Some of the more successful farmers of that day had a new time saving device called a tractor. It increased the farm productivity and, in general, made life easier because more work could be done with this 'mechanical beast'. My dad dreamed that some day he would have his own tractor with every implement he could get. When he rea
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