Symptoms:
- 2-3 Shift concerns
- 4-5 Concerns
- Delayed Reverse
- C3 Clutch burned
- Slips & flares
- Pressure control out-of-range codes
Cause:
Oscillation of the C3 clutch control valve causes bore wear, allowing critical pressure escape and preventing proper actuation of C3 clutches.Correction:
Recover hydraulic control and renew shift performance by reconditioning bore and installing Sonnax oversized C3 clutch control valve kit.TF-80SC, TF-81SC
Oversized C3 Clutch Control Valve Kit
Part No. 39741-50K
Also fits Volvo (AM6), Opel (AF40), Peugeot (TF-80), Saab (AF40/6), Land Rover (TF-80), Ford (AF21) and Mazda (AW6A-EL).
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Tooling:
- F-39741-TL50
- VB-FIX
You need this if... View Instructions Find a Distributor
C3 clutches in Aisin AW TF-80SC and TF-81SC transmissions are applied in 3rd, 5th and Reverse Gears in conjunction with other clutch packs. As the C3 clutch control valve oscillates and strokes over time, bore deterioration results which prevents proper hydraulic control of the C3 clutch pack. This can cause flares, slipping, erratic clutch apply timing, ratio codes, bind-ups and burnt C3 clutches. Reconditioning the bore and installing Sonnax oversized C3 clutch control valve kit 39741-50K restores normal shift operation and feel by re-establishing the hydraulic integrity of the C3 circuit.
- Annular groove helps center valve in bore to reduce future side-load wear
- New spring matches OE calibration
- Hardcoat anodized aluminum valve combats premature wear
- Valve
- Spring
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.
Aisin AW TF-80SC Valve Body Layout
Aisin AW TF-81SC Valve Body Layout
