is known in the prior art as shown in fig2 of the drawings two secondary pumps 30 and 40 are connected to the side of distributor block or control base 4 opposite primary pump 1 the secondary pumps are driven by input shaft 2 which extends completely through control base 4 or by a coaxial intermediate shaft mounted in the control base and connected to input shaft 2 secondary pumps 30 and 40 supply the working hydraulics and the additional consumers on the vehicle the secondary pump which supplies the working hydraulics of the vehicle and operates in the medium pressure range and the other secondary pump operates in the low pressure range in addition to the relatively large expense for components the prior art arrangement shown in fig2 of the drawings is disadvantageous because of the relatively substantial length of the hydrostatic pump assembly in the hydrostatic assembly shown in fig1 of the drawings input shaft 2 is mounted in a roller bearing 10 located adjacent the end of control base 4 and extends beyond roller bearing 10 into a recess 11 which is formed in control base 4 a swash plate type axial piston secondary pump 12 is shown as completely contained in recess 11 although it can also be only partially contained in the recess recess 11 can be formed in control base 4 by drilling or by casting if control base 4 is cast secondary pump 12 operates in the medium pressure range and is.