Patent ID: 6694615
Filing Date: 2004-02-24
Classification: B23P,F15B,Y10T

Abstract:
A method of manufacturing a hydraulic cylinder for a work vehicle, the cylinder including a cylindrical tube and a plug having a pilot portion and an eye portion, the method comprising the steps of:inserting the pilot portion of the plug into a first end of the cylindrical tube; forming a circumferential weld between the plug and the first end of the cylindrical tube around the entire circumference of the plug and cylindrical tube to thereby form a hydraulic-fluid-tight junction between the plug and cylindrical tube; and inserting a seal into a second end of the cylindrical tube such that the seal is coaxial with the plug and seals the pilot portion against the cylindrical tube, wherein the step of inserting a seal comprises the steps of (i) providing a circumferential groove on the pilot portion of the plug; (ii) inserting an O-ring into the second end of the cylindrical tube after the step of forming a circumferential weld; and (iii) forcing the O-ring into the circumferential groove on the pilot portion of the plug.