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.
Powertrain
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Breather Line and Suction Line Inspection (Page-2)
Attach the fuel pressure gauge attachment. Then connect the vacuum pump/gauge
(A) to the suction line (B), and apply vacuum to the line:
If the line holds vacuum, check for a blocka ...
Warranty Coverages
■ U.S. Owners
Your new vehicle is covered by these warranties:
New Vehicle Limited Warranty – covers your new vehicle, except for the
emissions control systems and accessories, against defe ...