September 30, 2005
Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits
Gregg Nader
Symptoms:
- TCC apply & release concerns
- TCC codes
- Burnt converter
Cause:
Continuous oscillation of the steel lockup control plunger valve wears the inside of the aluminum sleeve bore, allowing converter apply pressure to exhaust and preventing proper control of the lockup control valve.Correction:
The tightly toleranced, drop-in replacement Sonnax lockup control plunger valve kit restores proper hydraulic clearances and uses upgraded materials to prevent wear.U140E, U140F, U151E, U151F, U240E, U241E, U250E
Lockup Control Plunger Valve Kit
Part No. 57917E-03K
View Instructions
Find a Distributor
Toyota/Lexus U140E, U140F, U151E, U151F, U240E, U241E and U250E transmissions use a lockup control plunger valve to appropriately position the lockup control valve for converter apply and release. Wear of this plunger sleeve can result in converter apply pressure exhausting, resulting in TCC apply & release concerns, TCC codes, and a burnt converter. Replacing the worn sleeve and plunger with Sonnax lockup control plunger valve kit 57917E-03K restores proper control at this location.
- Hardcoat anodized aluminum valve combats premature wear
- Annular grooves have been added to the valve to prevent sideloading-related wear
- Drop-in Zip Valve™ parts install quickly and easily
- Plunger Valve
- Sleeve
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.
Toyota/Lexus U151E/F, U250E Valve Body Layout
Toyota/Lexus U140E/F, U240E, U241E Valve Body Layout
January 21, 2013
Toyota/Lexus U151E/F, U250E Vacuum Test Guide
December 21, 2012
