Patent ID: 8234784
Filing Date: 2012-08-07
Classification: F15B,F16H,Y10T

Abstract:
1. A method for extending the life of an automatic transmission booster valve, the method comprising: partially disassembling the automatic transmission; disassembling a booster valve assembly including an original booster valve piston and an original booster valve sleeve from the automatic transmission; removing an original booster valve spring of the booster valve assembly; replacing the original booster valve spring with a replacement booster valve spring configured to shift an operating range of a booster valve piston from a worn portion of a booster valve passage to an unworn portion of the booster valve passage; removing ⅛ inches of material from a spooled end portion of the booster valve piston; reassembling the booster valve assembly using the original booster valve piston and the original booster valve sleeve into the automatic transmission; and reassembling the automatic transmission.