Drop-in signal accumulator piston kit and method for replacing an original equipment signal accumulator piston

A method for replacing an original equipment (OE) signal accumulator piston in a vehicle transmission hydraulic circuit, the OE signal accumulator piston positioned in a bore in a valve body having an open end and a fluid port, the method comprising:

• removing the OE signal accumulator piston from the bore, the OE signal accumulator piston having a first diameter;
• installing a sleeve having open first and second ends in the bore with the first end being closer than the second end to the fluid port of the bore;
• positioning a piston in the sleeve, the piston having a second diameter that is smaller than the first diameter of the OE signal accumulator piston;
• positioning a spring in the bore so as to bias the piston toward the fluid port;
• and
• positioning a plug in the bore closer to the second end of the sleeve than to the first end of the sleeve to thereby removably retain the sleeve, the piston and the spring in the bore, wherein positioning the plug in the bore prevents the sleeve from moving axially.

A method for replacing an original equipment (OE) signal accumulator piston in a vehicle transmission hydraulic circuit, the OE signal accumulator piston positioned in a bore in a valve body having an open end and a fluid port. the method comprising:

• removing the OE signal accumulator piston from the bore. the OE signal accumulator piston having a first diameter:
• installing a sleeve having open first and second ends in the bore with the first end being closer than the second end to the fluid port of the bore;
• positioning a piston in the sleeve, the piston having a second diameter that is smaller than the first diameter of the OE signal accumulator piston;
• positioning a spring in the bore so as to bias the piston toward the fluid port;
• and
• positioning a plug in the bore closer to the second end of the sleeve than to the first end of the sleeve to thereby removably retain the sleeve. the piston and the spring in the bore, wherein the plug is positioned so as to abut the sleeve.