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.
Technical Information
The diagrams in this section give you the dimensions and capacities of your vehicle
and the locations of the identification numbers. It also includes information you
should know about your vehicle ...
Rear Seat Removal/Installation
NOTE:
Put on gloves to protect your hands.
Take care not to scratch the trim and panels.
Have an assistant help you when removing and installing the rear seat.
Lift ...