July 07, 2015
Audi 01J and 01T units may chatter on acceleration and exhibit push belt and pulley surface damage due to wear in the volumetric flow control valve bore. Wear in this bore allows critical pressure escape that prevents correct pulley control. Reconditioning the bore and installing Sonnax oversized volumetric flow rate kit 33741B-04K renews crucial clearances and restores normal hydraulic operation.
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.