Method for repairing a piston and shaft assembly

Details Method for repairing a piston and shaft assembly Method for repairing a piston and shaft assembly

B - Operations, Transporting

61

G

26/180, 213/46

B61G 11/18 (2006.01) B23P 6/00 (2006.01) F16J 1/12 (2006.01)

Patent

CA 1309385

Abstract of the Invention A method of repairing an end-of-car cushioning device for railroad cars is disclosed. The cushioning device is of the type having a piston and a shaft connected to the piston. In such devices, the shaft may become damaged with wear. In the disclosed method of repair, the old piston and shaft are removed from the cushioning device. The old shaft is substantially removed from the piston. The piston's true center is found, and a bore is cut through it. The bore is threaded, and an angled chamfer is cut in one end of the bore. A new shaft is provided with a threaded portion, the threads being adapted to mate with the threads of the bore. The shaft also has an angled chamfer adapted to mate with the bore's chamfer. The new shaft is connected to the old piston so that the threads engage and the chamfers abut.

558135

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