Troubleshooting On A Closed Circuit Variable/Fixed Displacement Pump & Motor
Not only is this pump variable, but it can be inverted, by making sure the direction and speed of the motor gyration are guarded from inside the pump on the output of a transmission pump. It will get rid of the directional or flow control valves in the circuit. The pump and motor are necessary, in which both of them are both needed in one assembly or separate and can be put together by pipes or hoses.
When fluid leak out inside and it goes back into the reservoir, it makes up for the loss using a charge pump. The charge pump will make sure the transmission loop stays full of fluid while it is working normally. Usually the charge pump goes on the back of a pump and takes on about 20% of the transmission pump’s output.
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