Continuous plunger valve oscillation causes wear at the overlap control valve sleeves, allowing modulated oil pressure to exhaust or oppose the shift and create numerous shift complaints in Mercedes 722.6 units. The highly wear-resistant Sonnax master overlap control valve sleeve kit 68942-05K restores necessary hydraulic control tolerances in the 1-2, 4-5 bore as well as the 2-3 and 3-4 bores.
End-face notches on Sonnax valves allow for easy sleeve identification:
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.
Vacuum testing at the port(s) indicated fails to hold the minimum in-Hg, or if wear is visually detected.