Patent ID: 6835150
Filing Date: 2004-12-28
Classification: F16H,Y10T

Abstract:
A method of repairing hydraulic leakage from a low/reverse piston fluid circuit of an automatic transmission case wherein the transmission case includes a piston retainer attached to an interior surface thereof in fluid communication with a fluid passage formed in the transmission case, said piston retainer defining a piston chamber wherein hydraulic fluid is delivered under pressure to actuate a low/reverse clutch of said transmission, said fluid passage being sealed by a gasket disposed intermediate said piston retainer and said transmission case, said method comprising the steps of:removing said piston retainer and said gasket from said transmission case; inserting a grommet seal into the fluid passage in fluid communication with said piston retainer; replacing said gasket with a steel shim having the approximate dimensions of said gasket; and reinstalling said piston retainer such that said grommet seal is captured between said steel shim and the transmission case, said grommet seal, said steel shim, and said piston retainer being disposed in fluid communication with the fluid passage providing a leakproof low/reverse piston fluid circuit.