Importance

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Abstract

A drop-in signal accumulator piston assembly to replace 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 a fluid port. A cylindrical sleeve has open first and second ends with an internal diameter that reduces at a transition therebetween. A piston is positioned in the sleeve and has open and closed ends. The cylindrical sleeve is configured such that the transition in the internal diameter limits movement of the piston within the cylindrical sleeve. A spring is positioned in part in the open end of the piston and in part extending beyond an end of the piston. The sleeve is positioned in the valve body bore, with the piston and the spring positioned in the sleeve. The sleeve, the piston, and the spring are enclosed within the valve body bore.

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First Claim