| 摘要 |
A method and apparatus for selectively replacing any of a plurality of different types of railroad car door roller assemblies conventionally used with different types of railroad car door tracks. The method includes supplying a roller assembly replacement kit which includes a housing having a pair of spaced end sections wherein each of the end sections is constructed and arranged to rotatably support a roller member for movement on a cooperating one of the tracks. Each of the end sections has a pair of opposed side walls having downwardly projecting feet thereon. An intermediate section rigidly interconnects the end sections and an upright aperture is provided in the intermediate section. The kit also includes separate rigid guide blocks or pads, at least one hook member, and at least one threaded member. In replacing one selected type of roller assembly, the aperture in the housing is threaded and a threaded member is threadably secured into the threaded aperture. The housing then may be used to replace one type of roller assembly used in connection with one type of cooperating track. Other types of roller assemblies may be replaced in various ways including by welding guide blocks to the feet, by severing two feet, then welding guide blocks to each of the remaining feet, and welding the hook member to the top of the end section of the housing, or by severing two feet and welding J-shaped hooks to the remaining feet. |
