Transtar - Valve Body Inspection

Valve body inspection today requires much greater attention than yesterday. The valve body is the brain of an automatic transmission and can be the most difficult component to address. Valve bodies of yesterday were simple cast-iron/aluminum castings with steel valves, many of which with simple on-off functions. Today castings are more involved with anodized aluminum valves that oscillate in the bores. Wear characteristics are much different as are inspection techniques.