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.
A/T Differential Carrier Bearing Preload Inspection (A/T)
Special Tools Required
Driver Handle, 15 x 135L 07749-0010000
Bearing Driver Attachment, 72 x 75 mm 07746-0010600
Preload Inspection Tool 07HAJ-PK40201
NOTE: If the transmission housing, to ...
A/T Countershaft Reverse Selector Hub Installation (A/T)
Special Tools Required
Driver Handle, 40 mm I.D. 07746-0030100
Install 1st gear, 2nd gear, 3rd gear, the 33.2 x 40 x 26 mm
collar, the 29 mm cotters, and the 33 x ...
Vents, Heating, and A/C
* : If equipped
Airflow Controls
Fan Control Dia
Turn this dial to increase or decrease the fan speed and airflow.
Temperature Control Dial
Turning this dial clockwise increases the temperature ...