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.
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 ...
Lift and Support Points
NOTE: If you are going to remove heavy components such as suspension or the fuel
tank from the rear of the vehicle, first support the front of the vehicle with tall
safety stands. When substantial ...
Fuel Pressure Regulator Replacement
Remove the fuel tank unit.
Remove the reservoir (A).
Remove the clip (B) and the ground wire (C), then remove the bracket (D).
Remove the clip (E), then r ...