Flow under no pressure only really tells you the pump is turning. You need to put it to work, I mean turn steering wheel or even put the pressue gauge in the return line. Like I said before, the relief valve is in pump so you can safely block return.While observeing the flow coming out of return line, turn steering wheel. If front wheels do not turn and flow stays the same that will tell you flow is going right on through bolster valve and cyl. If the flow stops or darn near stops, that tells you it is pump or relief valve. A shot pump will flow almost identical amount of oil with no pressure applied. That is why we flow rate pumps with flow raters and check free flow against flow under pressure. I would sure do more checking on pump part of problem before I got involved with the front bolster.
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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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