January 16, 2014
When Toyota/Lexus A750, A760, A960 and AB60 series units suffer shift issues such as harsh shifts, flare on shift and burnt bands, the brake control valve or bore may be worn out. Worn components allow critical pressurized fluid to cross leak into adjacent hydraulic circuits or to exhaust uncontrollably to the sump. The Sonnax oversized brake control valve kit 147741-28K restores OE functionality by eliminating cross leaks between hydraulic circuits and uncontrolled pressure losses to the sump.
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.
A vacuum test at ports indicated fails to hold a minimum of 14 in-Hg of vacuum, or if visual wear is detected.