- Burnt brake clutches
- Burnt clutches
- Delayed Reverse with harsh engagement
- Flare shifts
- Forward slip
- Harsh Reverse
- Harsh shifts
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.
B1, B2, B3, C2 Accumulator Piston Kit
- O-Rings (2) 1 extra
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.
- No machining or special tools required
- O-ring provides positive seal even in worn bores
- Annular grooves provide better piston centering and reduce wear
Fits in any of four locations.
You need this if...
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.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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