I had a 1974 gasser, bought in 1978. Had just bought my farm and this was my first tractor to amount to anything......not really farm equipment experienced at the time.
I locked up the hydraulics one day and had to get at the service valves, hoping that was where I'd find the problem....was in luck. I do not recall having to pull the cover off the top. I recall a plate on the lower right side or lower rear of the tractor, maybe 3"x8" and under this cover were the pressure relief valves and maybe a few more things. Do not recall draining any sump. Half a dozen items to my recollection. My problem was that I broke a spring on one of the valves when I hit the implement that was jammed against my draw bar, causing it to very abruptly dislodge with full pressure on it....all best as I can recall. Never had the top off the H-D area.
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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