Mazda RX-8 Workshop Manual page 2292

7. Remove the O-ring from the oil strainer.
8. Disconnect the solenoid connectors from the solenoids.
9. Disconnect the coupler component from the clamps.
10. Remove the lock plate from the control valve body component.
11. Pull the TFT sensor from the control valve body component.
12. Remove the coupler component mounting bolt from the transmission case.
13. Remove the coupler component from the transmission case.
14. Remove the O-ring from the coupler component.
15. Install a new O-ring to the coupler component.
16. Tighten the coupler component mounting bolt to the transmission case.
Tightening torque
3.9—6.9 N·m {40—49 kgf·cm, 35—42 in·lbf}
17. Install the TFT sensor and the lock plate with the bolt to the control valve body component.