December 30, 2013
Required tool kit F-68942-TL31 is no longer in production. Check with your distributor for availability.
The Mercedes 722.6 transmission uses clutch-to-clutch transitioning during shifts, so timing is very critical to prevent shift complaints like flares or bind-ups. The overlap control valves, controlled by EPC (modulated pressure) and shift valve pressure, are used to gradually reduce the pressure to the disengaging clutch.
Sonnax oversized 3-4 overlap control valve kit 68942-31K has slightly longer critical spool diameters and optimized annual groove placement for better hydraulic sealing.
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 recommended minimum in-Hg, or if wear is visually detected.