These problems can be caused by severe wear of the boost valve sleeve, allowing EPC and reverse oil leakage.
The Sonnax boost valve assembly has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.
Toyota vehicles with a U151E/F, U250E transmission may exhibit insufficient line rise in the drive ranges and excessively high pressures in reverse. This may be caused by continuous oscillation of the steel boost valve within the cast-aluminum sleeve, creating excessive wear and a path for EPC and reverse pressures to leak. The Sonnax replacement boost valve assembly, 27741-01K, has upgraded materials and minimal clearances to prevent wear and restore proper hydraulic control.
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.
January 21, 2013
Topics: Vacuum Testing Vacuum Test Guides Transmission Toyota/Lexus U250E Transmission U151F Transmission U151E TransmissionRead Now
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