Since the length of the OE accumulator piston is short relative to its diameter, the effect of incidental side loading forces is increased. This characteristic, combined with relatively strong nested springs and the soft material of the valve body, results in severe wear. This extreme wear is noticeable in many low mileage units.
Installing the Sonnax sleeve creates a new accumulator bore surface in severely worn valve bodies. Our improved sleeve design provides increased wear resistance and sealing. The kit comes with an assortment of custom-designed springs which allow you to duplicate and restore OE accumulator calibration and response.
Worn-out Aisin AWTF-80SC accumulator piston bores allow pressurized transmission fluid to leak past the accumulator piston to the sump. These leaks can result in a flare at upshift, delayed engagement, poor linerise or clutch failure. The Sonnax accumulator piston and sleeve repair kit 39741-42K will restore a worn accumulator bore and correct leakage problems.
|OE SPRINGS||SONNAX SPRINGS|
|Paint Color||Dimensions||Paint Color||Dimensions|
|Yellow||O.D.= .618" (15.7mm)||Yellow||O.D.= .520" (13.21mm)|
|Wire Dia. = .078" (1.98mm)||Wire Dia. = .068" (1.73mm)|
|Yellow||O.D.= .412" (10.46mm)||Yellow||O.D.= .345" (8.76mm)|
|Wire Dia. = .054" (1.37mm)||Wire Dia. = .047" (1.19mm)|
|No Paint||O.D.= .632" (16.05mm)||No Paint||O.D.= .523" (13.28mm)|
|Wire Dia. = .083" (2.11mm)||Wire Dia. = .070"(1.78mm)|
|Gray/Blue||O.D.= .429" (10.90mm)||Gray/Blue||O.D.= .336" (8.53mm)|
|Wire Dia. = .063" (1.60mm)||Wire Dia. = .051" (1.30mm)|
This kit can be modified to fit other variations of the AW 6-speed applications by modifying the sleeve length. Can be used in 5 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.
September 30, 2005
Topics: Diagnostics And Theory TransmissionRead Now
Contact a Sonnax Parts Distributor.
The accumulator bore and piston wear is severe enough that Sonnax accumulator piston kit [15741-14K] will not function in the worn bore.