The differential lift ball, pin and spring has a couple of purposes. This pump was designed to have a delayed drop where as you first pushed lever forward far enough to release the first check ball which would be the outlets that are hooked together on both side of pump and then to say lower the rear section of a cultivator you pushed lever farther to release second check ball that is connected to the single outlet. Well, often times the first ball opened hard so you had to push pretty hard and in so doing you inadverdently pushed the second check valve also so all dropped at same time. By using the differential check valve it required much less force on lever to release that first check giving you better control of second check ball. What I liked the differential check valve for , and I did install them in some pumps that did not have them, was with a heavy load on a loader for instance, you have much better control for a lowering the loader. If you pump will latch ok like you say, next thing to determine is if on the lowering cycle you are actually opening those check ball with the lever or is the spring inside opening them by itself, in other words, is you inner lever in the slot of that cam mechanism properly. If it works, just change your stops on rod to get it where you want it .Neutral, raise, and lower.
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Today's Featured Article - Memories of an IH Super A When I was ? up to 10, I worked on my Papaw's farm in Greeneville, TN every summer. As I grew older (7), it was the thrill of my day to ride or drive on the tractor. My Papaw had a 1954 IH Super A that he bought to replace a Cub. My Papaw raised "baccer" (tobacco) and corn with the Super A, but the fondest memory was of the sawmill. He owned a small sawmill for sawing "baccer" sticks. The Super A was the powerplant. When I was old enough (7 or 8), I would get up early and be dressed to
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