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.
Your Vehicle’s Safety Features
Your vehicle is equipped with many features that work together to protect you
and your passengers during a crash.
Some features do not require any action on your part. These include a strong
st ...
Countershaft Disassembly (M/T)
NOTE: Refer to the Exploded View in the countershaft reassembly, as needed,
when removing components pressed onto the countershaft.
Securely clamp the countershaft assembly in a bench vise wi ...
Starting System
Starter Overhaul
Exploded View
NOTE: Refer to the Exploded View if needed during this procedure.
Armature Inspection and Test
Remove the starter.
Inspect the armature f ...