Fuel injection pump for internal combustion engines

A fuel injection pump for internal combustion engines, having at least one axially displaceable pump piston including a tappet, which reciprocates by means of a cam for driving the pump piston, and having a pressure spring for positively keeping the cam, tappet and pump piston in engagement, which pressure spring is supported at one end on the housing and at another end on a spring plate so as to grip an annular flange on a piston bottom of the pump piston the annular flange protruding radially therefrom and further having a pressure plate located in between the piston bottom and the tappet, characterized in that the spring plate has a, cup shape and a plate bottom thereof having an assembly aperture for insertion therethrough of the piston bottom and the annular flange, the piston bottom being arranged to rest in a cup-shaped interior of said spring plate while the plate bottom grips the annular flange, that at least two inwardly-projecting protrusions project from an inner wall defining a cylindrical cup portion, said protrusions being spaced apart from the spring plate bottom, and that the pressure plate is provided with a collar means on an end oriented toward the pressure plate bottom, a diametric extent of which collar means is smaller than an inside diameter of the cylindrical cup portion and greater than an internal radial spacing between the at least two protrusions, and a diameter of a body portion of the pressure plate is smaller than the interior radial spacing of the at least two protrusions from one another, whereby the body portion of the pressure plate may extend outwardly through the interior space between said protrusions while the collar means is retained thereon.