Wear at the accumulator piston bores in the valve body or on the critical diameters of the accumulator pistons allows apply oil to exhaust.
The Sonnax hardcoat anodized accumulator piston incorporates an O-ring for positive sealing and annular grooves for better centering and wear prevention.
Wear at the accumulator bores or on the critical diameters of the accumulator pistons in the Toyota/Lexus U660E/F, U760F/F transmission is very common. The B1, B2, B3 and C2 accumulator pistons are all the same size and are used during apply of the clutches and brakes to ease the engagement of the apply component. Wear at the valve body bore allows clutch/brake apply oil to exhaust, resulting in harsh or delayed apply of the clutch or brake, burned clutches and brakes, or slipping and flares in the associated gears.
Sonnax B1, B2, B3, C2 accumulator piston kit 47740-11K incorporates an O-ring for positive sealing, even in worn bores. This one kit will work in any of the four bores.
Fits in any of four locations.
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.
December 09, 2013
Topics: Identification Guides Transmission Toyota/Lexus U760F Transmission U660F Transmission U760E Transmission U660E TransmissionRead Now
December 30, 2013
Topics: Vacuum Test Guides Vacuum Testing Transmission Toyota/Lexus U660F Transmission U660E TransmissionRead Now
Contact a Sonnax Parts Distributor.
A vacuum test at the port indicated fails to hold at least 18 in-Hg, or if visual wear in bore or on the accumulator piston is detected.