Abstract: A pump, preferably rotary vane pump, roller cell pump, or gear pump, in particular for delivering diesel fuel, with a pump housing and a pumping unit that is arranged in the pump housing and preferably driven for rotation via the drive shaft of a motor, with the pumping unit comprising an intake area, is characterized by a hand pump unit that is integrated into the pump housing and delivers on the intake side into the flow path of the pumping unit.

Abstract: A pump having a pump housing with a rotor in it, particularly a vane pump. The pump housing having a centering aid in the form of a sleeve that extends toward a drive shaft. The shaft has a smaller diameter than the bore through the sleeve. The shaft has a preferably toothed end portion that is received in a non-positively locking manner in the rotor. In a single stroke vane pump, the axis of the drive shaft is offset from the axis of the sleeve to compensate for the forces in pumping. The housing over the rotor and drive thereto is disclosed.