To confirm, some pumps can be used as a motor and visa/versa. The difference is that some pumps will have drilled passages on the suction side of the pump, that prevent blowing out the shaft seal by allowing any oil reaching the seal cavity to be drawn back into the pump. Some pumps and motors will also have wear plates that are held against the gears by the oil pressure. If a pump or motor is configured for a certain rotational direction, as well as being intended as a pump or as a motor, using it differently will cause seal failure or worse.
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Today's Featured Article - Talk of the Town: What's in Your Tractor's Toolbox? - by Staff. This recent discussion on the Tractor Talk discussion board here at the on-line magazine drew so much response and proved to be so interesting that we wanted to share it with you here. The names of the people participating in the discussion have been left out to "protect the innocent" (to quote a once-popular television series).
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