October 16, 2014
Wear at the multiple accumulator bores in listed units is very common. At the clutch and band locations, wear allows component apply oil to exhaust, resulting in delayed engagements, slipping shifts, and burnt clutches and bands. Wear at the line pressure accumulator allows throttle signal oil leakage, which can result in reduced line pressure. Sonnax accumulator piston kit 15741-14K incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.This kit fits in several locations throughout the valve bodies as shown.
Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.
Visual inspection of the bore often shows shiny patches of wear. If wear is visible, perform a wet air or vacuum test in the necessary locations as shown. Vacuum test must hold a minimum of 18".