October 08, 2015
The RE5R05A 3rd and 4th design TCC control plunger valve has a larger diameter (.282") than the valve in this kit. Installing 63741-05K into a 3rd or 4th design application will cause excessive apply pressure, resulting in drivability concerns related to a lack of power and harsh converter apply. Do not install this kit into the TCC control bore of a 3rd or 4th design casting!
Nissan/Infiniti vehicles equipped with 1st and 2nd design RE5R05A valve bodies may have TCC concerns such as lockup shudder, premature or bumpy apply, slippage and/or a burnt converter. These issues can be caused by wear in the TCC control sleeve, which allows apply pressure leakage.
Vehicles equipped with RE7R01A, JR710E, JR711E and JR712E transmissions may display harsh downshifts caused by wear and leakage in the Low brake switch boost sleeve. All above issues can be solved by installing Sonnax TCC control valve/Low brake switch boost valve kit 63741-05K into the appropriate bore.
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.