The sealing rings are synthetic resin with chamfered ends. Check the condition of the sealing rings, and replace them only if they are worn, distorted, or damaged.
For a better fit, squeeze sealing rings together slightly before installing them.

Apply ATF to the new sealing rings, then install them on the secondary shaft.

After installing the sealing rings, verify the following:
The rings are fully seated in the groove.
The rings are not twisted.
The chamfered ends of the rings are properly joined.
Clutch Pedal, Clutch Pedal Position Switch, and Clutch Interlock Switch
Adjustment (M/T)
NOTE:
For a cruise control problem, check the clutch pedal position switch.
For a clutch interlock operation problem, check the clutch interlock
switch.
Remove the driver' ...
Output Shaft (Countershaft) Speed Sensor Replacement (A/T)
Remove the air cleaner assembly.
Disconnect the output shaft (countershaft) speed sensor connector, and
remove the output shaft (countershaft) speed sensor (A).
...
Disc Player Error Messages
The chart on the right explains the error messages you may see in the display
while playing a disc.
If you see an error message in the display while playing a disc, press the eject
button. After ...