Ford E4OD Cooler Line Check Valve Ballcheck Inspection Diagram (TB-3929-A)

This document is a single-page technical illustration (labeled "VIEW A", figure reference TB-3929-A) showing a cutaway view of a transmission cooler line fitting containing a check valve. The drawing identifies two components with arrows: the "BALLCHECK" (a ball shown seated inside the fitting bore) and the threaded "FITTING" itself. An instructional callout tells the reader: "Using a small screwdriver, press on the ballcheck – make sure it moves freely inside the check valve (cooler line fitting)." The purpose of the illustration is to guide a technician in inspecting the ballcheck within the cooler line return fitting to verify it is not stuck, which would restrict transmission fluid flow through the cooler circuit. The cutaway shows the ball located at the mouth of the fitting bore with the male threaded end extending to the right. The page contains no year, model, part numbers, or torque values — only the callout labels, the caption "CUTAWAY VIEW OF FITTING", the view designation "VIEW A", and the figure number "TB-3929-A". It was uploaded as part of a set covering E4OD transmission cooler line check ball and cooler installation procedures for a 1990 Ford Bronco.