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 - When Push Comes to Shove - by Dave Patterson. When I was a “kid” (still am to a deree) about two I guess, my parents couldn’t find me one day. They were horrified (we lived by the railroad), my mother thought the worst: "He’s been run over by a train, he’s gone forever!" Where did they find me? Perched up on the seat of the tractor. I’d probably plowed about 3000 acres (in my head anyway) by the time they found me. This is where my love for tractors started and has only gotten worse in my tender 50 yrs on this “green planet”. I’m par
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