Main pump testing , with a 3000-more Psig. gauge use fittings and install in auxiliary port , pull lever and see what pressure it develops. If you have a flow rater you can check it that way(best way). Piggyback pump is power steering only and has a separate relief. One other thing what does the oil look like if you run a hose into a pail? If foaming it is sucking air. What does the filter look like? If the screen on the side of the filter is plugged the filter is way plugged. The screen is a bypass. Does it sound like it is going onto pressure? Piggy back pump you put a gauge into the port on the pump and turn the steering until it goes on high pressure lock to lock. Caution those tractors have a rack the can break if you are not hearing go onto pressure. Note if the main pump fails the piggy back also doe as it is driven off the main pump shaft. I have seen the gear that drives the pump split and pieces fall inside.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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