Symptoms:

  • 3-4 Flare
  • 4-5-6 Slip
  • Erratic shift timing
  • C2 Clutch burned
  • Pressure control out-of-range codes

Cause:

Oscillation of the C2 clutch control valve causes bore wear that allows critical pressure loss, preventing proper actuation of C2 clutches.

Correction:

Recover hydraulic control and renew shift performance by reconditioning the bore and installing Sonnax oversized C2 clutch control valve kit.

TF-80SC, TF-81SC

Oversized C2 Clutch Control Valve Kit
Part No. 39741-46K

Also fits Volvo (AM6), Opel (AF40); Peugeot (TF-80), Saab (AF40/6), LandRover (TF-80), Ford (AF21) and Mazda (AW6A-EL).


You need this if... View Instructions Find a Distributor

C2 clutches in Aisin AW TF-80SC and TF-81SC transmissions are applied in 4th, 5th and 6th Gears in conjunction with other clutch packs. As the C2 clutch control valve oscillates and strokes over time, bore deterioration results, which prevents proper hydraulic control of the C2 clutch pack. This can cause flares, slipping, erratic clutch apply timing, ratio codes, and burnt C2 clutches. Reconditioning the bore and installing Sonnax oversized C2 clutch control valve kit 39741-46K restores normal shift operation by re-establishing the hydraulic integrity of the C2 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-80SC Valve Body Layout

Aisin AW TF-81SC Valve Body Layout

Aisin AW TF-81SC Valve Body Layout
  • TF-80SC, TF-81SC Oversized C2 Clutch Control Valve Kit 39741-46K
  • TF-80SC, TF-81SC Oversized C2 Clutch Control Valve Kit 39741-46K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

TF-80SC, TF-81SC Oversized C2 Clutch Control Valve Kit Vacuum Test Locations