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.
Power Mirror Actuator Replacement
Removal
Remove these items:
Mirror holder
Power mirror
Record the power mirror connector terminals location and the wire harness
colors. ...
Grab Handle Removal/Installation
Special Tools Required
KTC Trim Tool Set SOJATP2014
*Available through the Acura Tool and Equipment Program; call
888-424-6857
NOTE: Use the appropriate tool from the KTC trim tool set ...
Rear Seats
Adjusting the Rear Seat-Backs
Pull the lever on the right to change the angle
of the right half of the seat-back, and left for
the left half.
Folding Down the Rear Seats
1. Unlatch the detach ...