My guess would be the flow is dumping over a relief valve, so the pump is running at high pressure all the time. I'm not famiiar with the system without a schematic, so would not know why it's doing it, but chances are that's the problem. In order to warm the system up on some machines, we would deadhead a valve and run it over the main or a circuit relief... warms it up pretty fast. If there is a pressure port somewhare between the pump and valves somewhere, you could plumb a gauge in and see pretty quickly what it's doing. Not sure what the system main relief is, but I'd guess under 2000psi, 2500 for sure because it's an older design gear pump.
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Today's Featured Article - On the Road with Dave Gohl: Tractor Club Beginnings - by Dave Gohl. I was surprised about a month ago when I got a call from a fellow tractor croonie. His message was interesting and to the point. He's says "Dave, I've been thinking about starting a Two Cylinder club for our area. What do ya think?" It was a loaded question. I said that I would be interested, and was wondering what his next step was. (Although I was talking under my breath, since I thought of this some years ago) My friend, Arlyn Lamb of Lakeville, Minnesota was sincere in his miss
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