Patent ID: 6722385
Filing Date: 2004-04-20
Classification: F15B,F16H,F16K,Y10T

Abstract:
A hydraulic valve repair kit for use in combination with a hydraulic valve assembly disposed within the valve body of an automatic transmission, wherein the valve assembly comprises a valve piston having a plurality of control diameters and a coaxial spring guide diameter formed thereon, a compression spring disposed on the spring guide diameter, and a spring retainer plate, said valve piston being spring-biased to an open position and being axially moveable to a closed position responsive to a predetermined maximum fluid pressure, said valve repair kit comprising:a replacement spring retainer plate installed within the valve body adjacent the spring guide diameter and functioning as a seating surface for the compression spring; and a cylindrical valve cap having a longitudinal bore, said valve cap having a spring locating diameter of a predetermined axial length equal to the axial length of the spring guide diameter, said valve cap being radially disposed about the spring guide diameter and intermediate the spring guide diameter and the compression spring, said valve cap serving as a wear surface for contact with said replacement spring retainer plate in operation thereby preventing mechanical damage to the spring guide diameter.