January 16, 2014
In Toyota A340E/F late units, valves, springs and pressurized fluid repeatedly push on the end plugs causing them to deform and wear. As a result, critical pressure is lost due to excessive clearance between the plug and bore. Sonnax O-ringed end plug kit 97741-19K restores correct circuit pressures by positively sealing to reduce pressure losses past the end plug.
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 tests at the ports indicated fail to hold at least 18 in-Hg. (See vacuum test locations on chart on page two of the instructions)