Hydraulic element assembly

A hydraulic lash adjuster for disposition between a rocker arm and a valve stem of an internal combustion engine comprising a body having an axially extending neck depending from a lower end thereof, an enlarged head portion extending from the terminal end of said neck and having a semispherical lower surface, said lash adjuster further comprising a foot assembly including a disk shaped foot having an upper surface, a lower surface and a cylindrical sidewall defining an outer diameter, said upper surface having a socket configured to receive said enlarged head therein, said lower surface configured to contact said valve stem, said foot assembly further comprising an inverted cup shaped retainer having a generally cylindrical wall comprising a lower pilot cylinder and an upper retaining cylinder having an inside diameter smaller than said pilot cylinder and a shoulder extending therebetween, and depending radial leaves extending inwardly from an upper end of said retaining cylinder to define a central opening through which said axially extending neck extends, and said central opening having a diameter smaller than said enlarged head, said retaining cylinder of said retainer extending parallel to said cylindrical sidewall of said foot and wherein the inside diameter of said retaining cylinder is smaller than the outer diameter of said sidewall of said foot to provide a parallel frictional force therebetween to maintain said foot and said retainer in engagement, and wherein said retainer is operable to prevent disassembly of said body and said foot assembly.