supercharger reservoir chamber 54 maintained at 5 psi for delivering a higher pressure hydraulic fluid to the manual pump 2 through pilot check valve 4 this same reservoir 54 acts as a return supercharger reservoir chamber for all return fluid through the system it includes a 5 psi back pressure check valve 53 which permits the fluid once having reached 5 psi to be discharged into main reservoir 52 for delivery to hydraulic pump 16 as can be seen from the fig2 the hydraulic a reservoir 56 includes an opening 58 for receiving a portion of hydraulic pump 16 which draws fluid from the main reservoir 52 for pumping to other portions of the system the opening 58 is circumscribed by a number of drilled and tapped holes which permit a flange on hydraulic pump 16 to be attached thereto in the top portion of the hydraulic reservoir 56 there is provided a system return opening 57 for receiving spent fluid used in other portions of the system which is initially returned to the pressurized supercharger reservoir chamber 54 this chamber 54 further defines an outlet 55 connected to line 130 for delivering supercharged pressure ultimately to manual pump 2 a front portion of the hydraulic reservoir assembly 56 is adapted to be connected to the filter 18 and to provide sight gages for viewing the internal parts of the reservoir furthermore a filling hole 60 is provided with a cap 61 which permits filling of the hydraulic reservoir 56 with hydraulic fluid for use in the system and closing the.