Fuel injection pump for internal combustion engines

A fuel injection pump for internal combustion engines having a pump housing and a reciprocating pump piston means defining a pump work chamber as well as an equal-pressure relief valve means inserted into the pressure line leading to an injection valve each said means secured in said pump housing by means of a connector fitting, wherein said equal-pressure relief valve comprises an assembly including a valve housing, a housed pressure valve body opening in the supply direction of the fuel counter to the force of a pressure valve spring and a relief valve opening counter to the supply direction of the fuel, said relief valve further including a valve spring supported on said pressure valve body and said housing therefor being embodied as a beaker-shaped filler piece disposed inside said pressure valve spring, said filler piece being mounted on a cylindrical protrusion of said pressure valve body and adapted to contain said relief valve, characterized in that said equal-pressure relief valve is provided with a fastener means for securing at least a portion of said assembly comprising said pressure valve body said filler piece and said relief valve as a unit when said connector fitting is removed.