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.
Brake Booster Replacement
Remove the air cleaner cover and the air cleaner case.
Remove the master cylinder.
Disconnect the brake booster vacuum hose (A) from the brake booster.
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Combination Light Switch Test/Replacement
Remove the steering column covers.
Disconnect the 12P connector (A) from the combination light switch (B).
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Shift Fork Disassembly/Reassembly (M/T)
NOTE: Prior to reassembling, clean all the parts in solvent, dry them, and
apply MTF to all contact surfaces.
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