I have two manuals, one I cannot find a number on shows 35 to 40 psi, other manual ISS-1012-R shows 58 to 66 psi above 700 rpm. Original gauges on pumps did not indicate psi, they had a normal range and a low pressure range. Red and white sections. Some pumps did not have a gauge on them and you had to T into plunger feed pressure line.
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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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