AR Series Variable Displacement Piston Pumps, Pressure Compensator Type 

Geometric Displacement 15.8 cm3 /rev,   @ 1800 rpm= 7.51 gpm, With volume stop,  Min. Adj. Flow cm3 /rev 6,  2.85 gpm

maximum pressure adj. 2320 psi

 Before first starting pump, fill pump case with clean operating oil via the filling port. In order to avoid air blockage when first starting, adjust the control valves so that the discharged oil from the pump is returned direct to the reservoir or the actuator moves in a free load.