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 - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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