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.
Instruments and Controls
This section gives information about the controls and displays that contribute
to the daily operation of your vehicle. All the essential controls are within easy
reach. ...
A/T Differential Backlash Inspection (A/T)
Install the driveshaft and intermediate shaft into the differential
assembly, and place the axles on V-blocks (A).
Measure the backlash of the pinion gears (B) wit ...
Place Phone Number
DEST button
►DEST Menu 2►Place Phone Number
Select a destination by phone number. Only phone numbers in the database are
recognized.
1. Enter the area code and phone
number. Select ...