How do you install hydraulic pump in 573 Massey Ferguson 4 wheel drive?

To install the hydraulic pump in a 573 Massey Ferguson 4-wheel drive, first ensure the tractor is securely parked and the hydraulic system is depressurized. Remove any necessary covers to access the pump, disconnect the hydraulic lines and wiring, and unbolt the old pump. Install the new hydraulic pump by reversing the removal process—secure it with bolts, reconnect the hydraulic lines and wiring, and finally, check the fluid levels before testing the system.