U660F Archives - Transmission Digest
Toyota/Lexus U660E/F, U760E/F Oversized C2 Apply Control Valve Kit

Toyota/Lexus U660E/F and U760E/F transmissions may exhibit 3-4 shift flares, slipping in 4-5-6, and burnt C2 clutches due to wear in the C2 apply control bore. Sonnax oversized C2 apply control valve kit (p/n 47740-63K) restores the necessary hydraulic clearances required for proper valve function while protecting against premature wear.

Toyota/Lexus Oversized B1 Apply Control Valve Kit

Vehicles with Toyota/Lexus U660E and U660F transmissions may exhibit 2nd and 6th Gear shift complaints and burnt B1 clutches. This can be caused by wear at the valve and/or boost valve and sleeve, which leads to improper valve function. Reconditioning the bore and installing the Sonnax oversized B1 apply control valve kit 47740-57K will restore

Toyota/Lexus U660E, U660F: Critical Wear Areas and Vacuum Test Locations

OE valves are shown in a rest position and should be tested in a rest position unless otherwise indicated. Test locations are pointed to with an arrow. Springs are not shown for visual clarity. A low vacuum reading indicates wear. What should my vacuum test results be? While a properly calibrated and maintained test stand

Toyota/Lexus Oversized Converter and Lube Relief Check Valve Kit

This new Sonnax product is made to re-establish correct clearance for converter and lube functions.