July 07, 2015
Bore wear is common in Audi 01T units due to contamination and the high system pressure. Any unit with a worn clutch control valve and/or bore can show clutch chatter on Forward or Reverse engagement and clutch friction failure and overheat. These symptoms are caused by the loss of fluid pressure to the forward or reverse clutches due to excessive wear, allowing critical hydraulic pressure to leak to adjacent circuits or to the sump. OE function and performance can be expected after installing the Sonnax oversized clutch control (KSV) valve kit 33741B-02K.
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 14 and 16 in-Hg, or if wear is visually detected.