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.
EPS Control Unit Removal/Installation
Do the battery terminal disconnection procedure.
Remove the under-dash fuse/relay box.
Disconnect EPS control unit connector A (11P) and connector B (16P) by
pus ...
Clutch Clearance Inspection (A/T)
Special Tools Required
Clutch Compressor Attachment 07ZAE-PRP0100
Inspect the clutch piston, the discs, the plates, and the end-plate for
wear and damage, and inspect the clutch wav ...
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' ...